Bread 36969 226172961 2008-07-17T04:03:50Z Algebra 225654 Revert to revision 226065126 dated 2008-07-16 17:52:19 by Mauler90 using [[:en:Wikipedia:Tools/Navigation_popups|popups]] {{otheruses}} [[Image:Bread in Boudin.jpg|thumb|A variety of breads at the [[Boudin Bakery]]]] {{nutritionalvalue | name=Bread, white (typical) | kJ=1113 | fat=3 g | carbs=51 g | fiber=2.4 g | protein=8 g | niacin_mg=4 | thiamin_mg=0.5 | riboflavin_mg=0.3 | sodium_mg=681 | right=1}} {{nutritionalvalue | name=Bread, whole-wheat (typical) | kJ=1029 | fat=4 g | carbs=46 g | fiber=7 g | protein=10 g | niacin_mg=4 | thiamin_mg=0.4 | riboflavin_mg=0.2 | sodium_mg=527 | right=1}} '''Bread''' is a [[staple food]] prepared by [[baking]] a [[dough]] of [[flour]] and [[water]].<ref>"bread." Britannica Concise Encyclopedia. Encyclopædia Britannica, Inc., 2006. Answers.com 19 Feb. 2008. http://www.answers.com/topic/bread</ref> It may be [[leavened]] or unleavened. [[Edible salt|Salt]], [[fat]] and a [[leavening agent]] such as [[yeast (baking)|yeast]] are common ingredients, though breads may contain a range of other ingredients: [[milk]], [[Egg (food)|egg]], [[sugar]], [[spice]], [[fruit]] (such as [[raisin]]s), [[vegetable]]s (such as [[onion]]), [[Nut (fruit)|nuts]] (such as [[walnuts]]) or [[seeds]] (such as [[poppy|poppy seeds]]). Bread is one of the oldest prepared foods, dating back to the [[Neolithic]] era. The development of leavened bread can probably also be traced to prehistoric times. Fresh bread is prized for its taste, aroma and texture. Retaining its freshness is important to keep it appetizing. Bread that has stiffened or dried past its prime is said to be [[stale]]. Modern bread is often wrapped in [[paper]] or [[plastic]] film, or stored in an airtight container such as a [[breadbox]] to keep it fresh longer. Bread that is kept in warm, moist environments is prone to the growth of [[mold]]. Bread kept at low temperatures, for example, in a [[refrigerator]], will develop mold growth more slowly than bread kept at room temperature. However, unwrapped bread kept in a typical household refrigerator will turn stale quickly due to the low [[humidity]] of the air. {{Fact|date=June 2008}} The inner, soft part of bread is known to [[baker]]s and other [[culinary professional]]s as the ''crumb'', which is not to be confused with small bits of bread that often fall off, called ''crumbs''. The outer hard portion of bread is called the ''crust''. ==Usage== Bread can be served at any [[temperature]] ranging from [[room temperature]] to hot. Once baked, it can subsequently be [[toast]]ed. It is most commonly picked up and eaten with the hands, or sometimes with a knife and fork. It can be eaten by itself or as a carrier for another, usually less compact food. Bread may be dunked or dipped into a liquid (such as [[gravy|beef gravy]], [[olive oil]], or [[sardine]] pâté), topped with various spreads, both sweet and savory, or serve as the enclosure for the ubiquitous [[sandwich]] with any number of meats, cheeses, vegetables or [[condiments]] inside. ==Etymology== The word itself, [[Old English language|Old English]] ''bread'', is common in various forms to many [[Germanic language]]s; such as [[West Frisian language|Frisian]] ''brea'', [[Dutch language|Dutch]] ''brood'', [[German language|German]] ''Brot'', [[Swedish (language)|Swedish]] ''bröd'', and [[Norwegian language|Norwegian]] and [[Danish language|Danish]] ''brød''; it has been claimed to be derived from the root of ''[[brewing|brew]]'', but more probably is connected with the root of ''break'', for its early uses are confined to ''broken pieces'', or ''bits'' of bread, the [[Latin]] ''crustum'', and it was not until the 12th century that it took the place&mdash;as the generic name for bread&mdash;of ''hlaf'' (''hlaifs'' in [[Gothic language|Gothic]]: modern English ''loaf''), which appears to be the oldest [[Germanic languages|Teutonic]] name; [[Old High German]] ''hleib'' and modern [[German language|German]] ''Laib'', or [[Finnish (language)|Finnish]] ''leipä'', [[Estonian language|Estonian]] ''leib'', and [[Russian language|Russian]] ''хлеб (khleb)'' are similar (all are derived from the Old Germanic word for "loaf"). == History == Bread is one of the oldest prepared foods, dating back to the [[Neolithic]] era. The first breads produced were probably cooked versions of a grain-paste, made from ground cereal grains and water, and may have been developed by accidental cooking or deliberate experimentation with water and grain flour. Descendants of these early breads are still commonly made from various grains worldwide, including the [[Iran]]ian ([[Persian cuisine|Persian]]) [[lavash]]s, [[tabun]]s, [[sangak]]s, [[Mexico|Mexican]] ''[[tortilla]]'', [[India]]n ''[[chapati]]s'', ''[[roti]]s'' and ''[[naan]]s'', [[Scotland|Scottish]] ''[[oatcake]]'', [[North America]]n ''[[jonnycake]]'', [[Middle East]]ern ''[[pita]]'', and [[Ethiopia]]n ''[[injera]]''. The basic flat breads of this type also formed a staple in the diet of many early civilizations with the [[Sumer]]ians eating a type of barley flat cake, and the 12th century BC Egyptians being able to purchase a flat bread called ''ta'' from stalls in the village streets.<ref>Tannahill p. 37, 61, 69</ref> The development of leavened bread can probably also be traced to prehistoric times. Yeast spores occur everywhere, including the surface of cereal grains, so any dough left to rest will become naturally leavened.{{inote|McGee|p. 517}} Although leavening is likely of prehistoric origin, the earliest archaeological evidence is from ancient Egypt. Scanning electron microscopy has detected yeast cells in some ancient Egyptian loaves. However, ancient Egyptian bread was made from [[emmer]] wheat and has a dense crumb. In cases where yeast cells are not visible, it is difficult, by visual examination, to determine whether the bread was leavened. As a result, the extent to which bread was leavened in ancient Egypt remains uncertain.<ref>Samuel p. 558</ref> There were multiple sources of leavening available for early bread. Airborne yeasts could be harnessed by leaving uncooked dough exposed to air for some time before cooking. [[Pliny the Elder]] reported that the [[Gauls]] and [[Iberians]] used the foam skimmed from beer to produce "a lighter kind of bread than other peoples." Parts of the ancient world that drank wine instead of beer used a paste composed of grape juice and flour that was allowed to begin fermenting, or wheat bran steeped in wine, as a source for yeast. The most common source of leavening however was to retain a piece of dough from the previous day to utilize as a form of sourdough [[Bread starter|starter]].<ref>Tannahill p. 68-69</ref> Even within antiquity there was a wide variety of breads available. In the [[Deipnosophistae]], the [[Ancient Greece|Greek]] author [[Athenaeus]] describes some of the breads, cakes, cookies, and pastries available in the Classical world. Among the breads mentioned are griddle cakes, honey-and-oil bread, mushroom shaped loaves covered in poppy seeds, and the military specialty of rolls baked on a spit. The type and quality of flour used to produce bread could also vary as noted by [[Diphilus]] when he declared "bread made of wheat, as compared with that made of barley, is more nourishing, more digestible, and in every way superior." In order of merit, the bread made from refined [thoroughly sieved] flour comes first, after that bread from ordinary wheat, and then the unbolted, made of flour that has not been sifted."<ref>Tannahill p. 91</ref> [[Image:Peasants breaking bread.jpg|thumb|left|Peasants sharing bread, from the ''Livre du roi Modus et de la reine Ratio'', France, 14th century. ([[Bibliothèque nationale]])]] Within [[Middle Ages|medieval Europe]] bread served not only as a [[staple food]] but also as part of the table service. In the standard table setting of the day the [[Trencher (tableware)|trencher]], a piece of stale bread roughly 6&nbsp;inches by 4&nbsp;inches (15 cm by 10 cm), served as an absorbent plate. At the completion of a meal the trencher could then be eaten, given to the poor, or fed to the dogs. It was not until the fifteenth century that trenchers made of wood started to replace the bread variety.<ref>Tannahill p. 227</ref> [[Otto Frederick Rohwedder]] is considered to be the father of [[sliced bread]]. In 1912 Rohwedder started work on inventing a machine that sliced bread, but bakeries were reluctant to use it since they were concerned the sliced bread would go stale. It was not until 1928, when Rohwedder invented a machine that both sliced and wrapped the bread, that sliced bread caught on. A bakery in Chillicothe, Missouri was the first to use this machine to produce sliced bread. For generations, white bread was the preferred bread of the rich while the poor ate dark bread. However, in most western societies, the connotations reversed in the late 20th century with dark (whole grain) bread becoming preferred as having superior [[nutrition]]al value while white bread became associated with lower-class ignorance of nutrition.{{Fact|date=October 2007}} Another major advance happened in 1961 with the development of the [[Chorleywood Bread Process]] which used the intense mechanical working of dough to dramatically reduce the [[fermentation (food)|fermentation]] period and the time taken to produce a loaf. This process is now widely used around the world in large factories. More recently, and especially in smaller retail bakeries, [[Bread improver|chemical additives]] are used that both speed up mixing time and reduce necessary fermentation time, so that a batch of bread may be mixed, made up, risen, and baked in less than 3 hours. Dough that does not require fermentation because of chemical additives is called "no-time bread" by commercial bakers. Common additives include reducing agents such as [[L-cysteine]] or [[sodium metabisulfite]], and oxidants such as [[potassium bromate]] or [[ascorbic acid]].<ref>Pyler p. 703</ref> Often these chemicals are added to dough in the form of a prepackaged base, which also contains most or all of the dough's non-flour ingredients. Using bases and sophisticated chemistry, commercial bakers have made possible the fresh production of imitation artisan and sourdough breads by semi-skilled labor working in smaller shops. Recently, domestic [[breadmaker]]s that automate the process of making bread are becoming popular in the home. ==Cultural and political importance of bread== As a foodstuff of great historical and contemporary importance, in many cultures in the West and Near and Middle East bread has a significance beyond mere nutrition. The [[Lord's Prayer]], for example, contains the line 'Give us today our daily bread'; here, 'bread' is commonly understood to mean necessities in general. In [[Israel]] the most usual phrase in work related demonstrations is "lekhem, avoda" [bread, work], and during the 1950s, the [[beatnik]] community used the term bread as a euphemism for [[money]]. The word bread is now commonly used around the world in [[English language|English]] speaking countries as a [[synonym]] for money (as also is the case with the word [[dough]].) The cultural importance of 'bread' goes beyond slang, however, to serve as a metaphor for basic necessities and living conditions in general. A 'bread-winner' is a household's main economic contributor and has little to do with actual bread-provision, for example. This also goes along with the phrase "putting bread on the table." A remarkable or revolutionary innovation is often referred to as "the greatest thing since sliced bread." In the USSR, Lenin and his fellow Bolsheviks promised "Peace, Land, and Bread," which thereby became a mainstay slogan of Soviet propaganda. In [[Newfoundland and Labrador|Newfoundland]], bread was seen as having the power to protect against [[fairy|fairies]]. The term "[[breadbasket]]" is often used to denote an agriculturally productive region. In [[Slavic peoples|Slavic]] cultures [[bread and salt]] is offered as a welcome to all guests. The political significance of bread is considerable. In Britain in the nineteenth century the inflated price of bread due to the [[Corn Laws]] caused major political and social divisions, and was central to debates over [[free trade]] and [[protectionism]]. The [[Assize of Bread and Ale]] in the thirteenth century showed the importance of bread in medieval times by setting heavy punishments for short-changing bakers, and bread appeared in ''[[Magna Carta]]'' a half-century earlier. In contrast, in much of Asia rice is much more prominent as a staple and much of the connotations of bread as a cultural symbol of basic necessities are replaced by rice. To the more conservative elderly generations of Chinese in [[southern China]], the appearance of rice on the table is a fundamental constituent of a meal. Meals made of bread, such as a [[sandwich]], however substantial they may be, are considered as only light snacks in the eyes of the elderly generation. ==Types== Bread is a popular [[food]] in Western and most other societies, although East Asian societies typically prefer [[rice]] or [[noodles]]. It is often made from a [[wheat]]-[[flour]] [[dough]] that is cultured with yeast, allowed to rise, and finally baked in an [[oven]]. Owing to its high levels of [[gluten]] (which give the dough sponginess and elasticity), [[common wheat]] (also known as bread wheat) is the most common grain used for the preparation of bread, but bread is also made from the flour of other wheat species (including [[durum]], [[spelt]] and [[emmer]]), [[rye]], [[barley]], [[maize]] (or corn), and [[oat]]s, usually, but not always, in combination with wheat flour. Although common wheat is best suited for making highly-risen white bread, other wheat species are capable of giving a good crumb. Spelt bread ('''Dinkelbrot''') continues to be widely consumed in Germany, and emmer bread was a staple food in ancient Egypt. [[Canadian White| Canadian bread]] is known for its heartier consistency due to high protein levels in Canadian flour. *''White bread'' is made from flour containing only the central core of the grain (endosperm). *''Brown bread'' is made with endosperm and 10% bran. It can also refer to white bread with added colouring (often caramel colouring) to make it 'brown'; commonly labeled in America as "Wheat" bread (as opposed to "Whole Wheat" bread.)<ref>CBS Interactive Inc. [http://www.cbsnews.com/stories/2008/02/08/earlyshow/saturday/main3808472.shtml White Bread In Wheat Bread's Clothing]CBS Early Show, accessed June 14, 2008.</ref> *''Wholemeal bread'' contains the whole of the wheat grain (endosperm and bran). It is also referred to as 'whole grain' or 'whole wheat' bread, especially in North America. *''Wheat germ bread'' has added wheat germ for flavoring. *''Whole grain bread'' can refer to the same as 'wholemeal bread', or to white bread with added whole grains to increase its fibre content (i.e. as in "60% whole grain bread"). *''Granary bread'' is bread made from granary flour. Trademarked to [[Hovis]], it is made from malted white or brown flour, wheat germ and whole grains. *''[[Rye bread]]'' is made with flour from rye grain of variable levels. It is higher in fiber than many common types of bread and is often darker in color and stronger in flavor. In [[Finland]], [[Baltic States]] and [[Russia]], rye is popular type of bread. <center><gallery> Image:Strucla sweet bread.jpg|European sweetbread Image:Four loaves.jpg|Four loaves Image:French bread DSC09293.jpg|French bread Image:Breads and rolls.jpg|Breads and Bread Rolls at a bakery Image:Tin vienna bread.jpg|Tin [[Vienna bread]] Image:Bread in a traditional oven.JPG|Bread in a traditional oven Image:Brood.jpg|Pre-sliced bread Image:Bread rolls.jpg|Bread rolls Image:Pain aux noix.jpg|''Pain aux noix'' (nut bread) Image:Various grains.jpg|A [[cereal grain]] Image:Sourdoughbreadcrumb.jpg|Close up of sourdough bread slice Image:Baked food.jpg|A selection of breads Image:Moldy Bread.jpg|Crustless bread covered by [[Black bread mold|a mold]] Image:Rugbr%C3%B8d.JPG|Homemade rye bread </gallery></center> ==Composition and chemistry== ===Formulation=== The amount of water and flour are the most significant measurements in a bread recipe, as they affect texture and crumb the most. Professional bakers use a system of percentages known as ''[[Baker percentage|Bakers' Percentage]]'' in their recipe formulations, and measure ingredients by weight instead of by volume. Measurement by weight is much more accurate and consistent than measurement by volume, especially for the dry ingredients. Flour is always 100%, and the rest of the ingredients are a percent of that amount by weight. Common table bread in the U.S. uses approximately 50% water, resulting in a finely-textured, light, bread. Most artisan bread formulas contain anywhere from 60 to 75% water. In yeast breads, the higher water percentages result in more CO<sub>2</sub> bubbles, and a coarser bread crumb. One pound (500 [[gramme|g]]) of flour will yield a standard loaf of bread, or two French loaves. [[Calcium propionate]] is commonly added by commercial bakeries to retard the growth of molds. ===Flour=== {{main|Flour}} [[Flour]] is a product made from grain that has been ground into a powdery consistency. It is flour that provides the primary structure to the final baked bread. Commonly available flours are made from rye, barley, maize, and other grains, but it is wheat flour that is most commonly used for breads. Each of these grains provides the starch and protein necessary for the production of bread. The quantity and quality of the [[protein]]s contained in the flour serve as the best indicator of the quality of the bread [[dough]] and the finished bread. While bread can be made from all-purpose wheat flour, for quality bread a specialty bread flour, containing more protein, is recommended. Wheat flour in addition to its starch contains three water-soluble protein groups, [[albumins|albumin]], [[globulin]], [[proteose]]s, and two non-water soluble protein groups, [[glutenin]] and [[gliadin]]. When flour is mixed with water the water-soluble proteins dissolve, leaving the glutenin and gliadin to form the structure of the resulting dough. When worked by [[kneading]], the glutenin forms strands of long thin chainlike molecules while the shorter gliadin forms bridges between the strands of glutenin. The resulting networks of strands produced by these two proteins is known as [[gluten]]. Gluten development improves if the dough is allowed to [[autolyse]]. ===Liquids=== Water, or some other liquid, is used to form the flour into a paste or dough. The volume of liquid required varies between recipes, but a ratio of 1 part liquid to 3 parts flour is common for yeast breads while recipes that use steam as the primary leavening method may have a liquid content in excess of one part liquid to one part flour by volume. In addition to water, other types of liquids that may be used include dairy products, fruit juices, or beer. In addition to the water in each of these they also bring additional sweeteners, fats, and/or leavening components. ===Leavening=== Leavening is the process of adding gas to a dough before or during baking to produce a lighter, more easily chewed bread. Most bread consumed in the West is leavened. However, [[unleavened bread]]s have symbolic importance in [[Judaism]] and [[Christianity]]. Jews consume unleavened bread called [[Matza]] during [[Passover]]. They are also used in the [[Liturgy|Christian liturgy]] when they celebrate the [[Eucharist]], a rite derived from the narrative of the [[Last Supper]] when [[Jesus Christ|Jesus]] broke bread with his disciples during a [[Passover Seder]]. ====Chemical leavening==== A simple technique for leavening bread is the use of gas-producing chemicals. There are two common methods. The first is to use [[baking powder]] or a [[self-rising flour]] that includes baking powder. The second is to have an acidic ingredient such as [[buttermilk]] and add [[baking soda]]. The reaction of the acid with the soda produces gas. Chemically-leavened breads are called ''quick breads'' and ''[[soda bread]]s''. This technique is commonly used to make [[muffin]]s, [[pancake]]s, American-style [[biscuits]] and sweet breads such as [[banana bread]]. ====Yeast leavening==== Many breads are leavened by [[yeast]]. The yeast used for leavening bread is ''[[Saccharomyces cerevisiae]]'', the same species used for brewing alcoholic beverages. This yeast ferments [[carbohydrates]] in the flour, including any [[sugar]], producing [[carbon dioxide]]. Most bakers in the U.S. leaven their dough with commercially produced [[baker's yeast]]. Baker's yeast has the advantage of producing uniform, quick, and reliable results, because it is obtained from a [[pure culture]]. Many artisan bakers produce their own yeast by preparing a 'growth culture' which they then use in the making of bread. This culture kept in the right conditions will continue to grow and provide leavening for many years. Both the baker's yeast and the sourdough method of baking bread follow the same pattern. Water is mixed with flour, salt and the leavening agent (baker's yeast or [[sourdough]] starter). Other additions (spices, herbs, fats, seeds, fruit, etc.) are not necessary to bake bread, but often used. The mixed dough is then allowed to [[Proofing (baking technique)|rise]] one or more times (a longer rising time results in more flavor, so bakers often ''punch down'' the dough and let it rise again), then loaves are formed and (after an optional final rising time) the bread is baked in an [[oven]]. Many breads are made from a ''straight dough'', which means that all of the ingredients are combined in one step, and the dough baked after the rising time. Alternatively, dough can be made using a ''[[pre-ferment]]'', when some of the flour, water, and the leavening are combined a day or so ahead of baking, and allowed to ferment overnight. On the day of the baking, the rest of the ingredients are added, and the rest of the process is the same as that for straight dough. This produces a more flavorful bread with better texture. Many bakers see the starter method as a compromise between the highly reliable results of baker's yeast, and the flavor/complexity of a longer fermentation. It also allows the baker to use only a minimal amount of baker's yeast, which was scarce and expensive when it first became available. Most yeasted preferments fall into one of three categories: ''[[poolish]]'' or ''pouliche'', a loose-textured mixture composed of roughly equal amounts of flour and water (by weight); [[Biga (bread baking)|''biga'']] a stiff mixture with a higher proportion of flour; and ''pâte fermentée'', which is simply a portion of dough reserved from a previous batch. [[Sourdough]] (also known as ''levain'' or "natural leaven") takes it a step further, creating a pre-ferment with flour and water that propagates naturally occurring yeast and bacteria (usually ''Saccharomyces exiguus'', which is more acid-tolerant than ''S. cerevisiae'', and various species of ''[[Lactobacillus]]''.) ====Sourdough==== {{main|Sourdough}} [[Image:Sour dough loaves03.jpg|thumb|Sourdough loaves]] The sour taste of [[sourdough]]s actually comes not from the yeast, but from a [[lactobacillus]], with which the yeast lives in [[symbiosis]]. The lactobacillus feeds on the byproducts of the yeast fermentation, and in turn makes the culture go sour by excreting [[lactic acid]], which protects it from spoiling (since most microbes are unable to survive in an acid environment). All yeast-leavened breads used to be sourdoughs, and the leavening process was not understood until the 19th century, when with the advance of microscopes, scientists were able to discover the microbes that make the dough rise. Since then, strains of yeast have been selected and cultured mainly for reliability and quickness of fermentation. Billions of cells of these strains are then packaged and marketed as "Baker's Yeast". Bread made with baker's yeast is not sour because of the absence of the lactobacillus. Bakers around the world quickly embraced baker's yeast for it made baking simple and so allowed for more flexibility in the bakery's operations. It made baking quick as well, allowing bakeries to make fresh bread from scratch as often as three times a day. While European bakeries kept producing sourdough breads, in the U.S., sourdough baking was widely replaced by baker's yeast, and only recently has that country (or parts of it, at least) seen the rebirth of sour-vinegar dough in artisan bakeries. According to [[Alton Brown]], host of [[Food Network]]'s "[[Good Eats]]" television show, each region of the world has different strains of lactobacillus, hence the flavor of the bread made from home starters is unique. The [[San Francisco Bay Area]] is especially famous for its sourdough breads. Sourdough breads are most often made with a ''sourdough starter'' (not to be confused with the starter method discussed above). A sourdough starter is a culture of yeast and lactobacillus. It is essentially a dough-like or pancake-like flour/water mixture in which the yeast and lactobacilli live. A starter can be maintained indefinitely by periodically discarding a part of it and ''refreshing'' it by adding fresh flour and water. (When refrigerated, a starter can go weeks without needing to be ''fed''.) There are starters owned by bakeries and families that are several human generations old, much revered for creating a special taste or texture. Starters can be obtained by taking a piece of another starter and growing it, or they can be made from scratch. There are hobbyist groups on the web who will send their starter for a stamped, self-addressed envelope, and there are even mailorder companies that sell different starters from all over the world. An acquired starter has the advantage to be more proven and ''established'' (stable and reliable, resisting spoiling and behaving predictably) than from-scratch starters. There are other ways of sourdough baking and culture maintenance. A more traditional one is the process that was followed by peasant families throughout Europe in past centuries. The family (usually the woman was in charge of breadmaking) would bake on a fixed schedule, perhaps once a week. The starter was saved from the previous week's dough. The starter was mixed with the new ingredients, the dough was left to rise, then a piece of it was saved (to be the starter for next week's bread). The rest was formed into loaves which were marked with the family sign (this is where today's decorative ''slashing'' of bread loaves originates from), and taken to the communal oven to bake. These communal ovens over time evolved into what are known today as bakeries, when certain people specialized in bread baking, and with time enhanced the process so far as to be able to mass produce cheap bread for everyone in the village. ====Steam leavening==== The rapid expansion of steam produced during baking leavens the bread, which is as simple as it is unpredictable. The best known steam-leavened bread is the [[popover]]. Steam-leavening is unpredictable since the steam is not produced until the bread is baked. Steam leavening happens regardless of the rising agents (soda powder, yeast, baking-powder, sour dough, egg snow…) * The rising agent generates carbon dioxide - or already contains air bubbles. * The heat vaporises the water from the inner surface of the bubbles within the dough. * The steam expands and makes the bread rise. It is actually the main factor in the rise of bread once it has been put in the oven. [[Carbon dioxide|CO<sub>2</sub>]] generation, on its own, is too small to account for the rise. Heat kills bacteria or yeast at an early stage, so the CO<sub>2</sub> generation is stopped. ====Bacterial leavening==== [[Salt rising bread]] employs a form of bacterial leavening that does not require yeast. Although the leavening action is not always consistent, and requires close attention to the incubating conditions, this bread is making a comeback due to its unique cheese-like flavor and fine texture. [http://home.comcast.net/~petsonk/]. ====Aeration==== [[Aerated bread]] is leavened by carbon dioxide being forced into dough under pressure. The technique is no longer in common use, but from the mid 19th to 20th centuries bread made this way was somewhat popular in the United Kingdom, made by the [[Aerated Bread Company]] and sold in its high-street [[tea room]]s. ===Fats or shortenings=== Fats such as butter, vegetable oils, lard, or that contained in eggs affects the development of gluten in breads by coating and lubricating the individual strands of protein and also helping hold the structure together. If too much fat is included in a bread dough, the lubrication effect will cause the protein structures to divide. A fat content of approximately 3% by weight is the concentration that will produce the greatest leavening action. In addition to their effects on leavening, fats also serve to tenderize the breads they are used in and also help to keep the bread fresh longer after baking. ===Bread improvers=== {{Main|Bread improver}} [[Bread improver]]s are frequently used in the production of commercial breads to reduce the time that the bread takes to rise, and to improve the texture and volume of bread. Chemical substances commonly used as bread improvers include ascorbic acid, hydrochloride, sodium metabisulfate, ammonium chloride, phosphates, amylase, and protease. == Breads across different cultures == {{Unreferencedsection|date=June 2006}} [[Image:sourdoughbread.jpg|thumb|right|Sourdough breads like this [[baguette]] (left) and roundbread begin with a starter passed down from excess batter from a previous loaf.]] [[Image:DamascusSyrianBreadseller.jpg|thumb|Bread-seller in front of a bakery, [[Damascus]], 1910.]] There are many variations on the basic recipe of bread, including [[pizza]], [[chapati]]s, [[tortilla]]s, [[baguette]]s, [[brioche]], [[pita]]s, [[lavash]], [[biscuit]]s, [[pretzel]]s, [[naan]], [[bagel]]s, [[Puri (food)|puri]]s, and many other variations. *In [[Mexico]] bread is called ''pan''. Although corn [[tortillas]] are the staple bread in most of Mexico, breadrolls in many varieties are an important daily food for city dwellers. Popular breads in Mexico include the [[bolillo]] roll and ''pan dulce''. Pan Dolce, which is Spanish for [[Sweet Bread]], is primarily eaten at breakfast. *In [[Spain]] bread is also called "pan", and there are many varieties, about 315. There is a region called "Tierra del Pan" (literally translated as "Land of the Bread"), located in the province of [[Zamora (province)|Zamora]], where economy was in the past joined to this activity. *In the [[Philippines]], [[pandesal]] (or pan de sal; literally, salt bread) is a rounded bread usually eaten by Filipinos during breakfast. *[[Germany]] prides itself to have the largest variety of breads worldwide. More than 300-500 basic kinds of bread come together with more than 1,000 types of small bread-rolls and pastries. It has been estimated that the basic kinds of bread are so widely varied by more than 16,000 local bakeries that more than 1,000 different breads have been presented at a 2005 Cologne bread show. <ref>http://www.biv-rheinland.de/Brotweltrekord/BWR_WDR-TV_140905.pdf Bread World Record (in German)</ref>Germans are worldwide the biggest consumers (per capita) of bread followed by [[Chile]] [http://www.latinpanel.com.br/article/static/676?GlobalSectionIDOverride=2&Pais=Chile] *[[Finland]] and [[Russia]] both have dark, sourdough breads made of rye. Traditional Finnish rye bread is disc-shaped, with a hole in the center for easier storing. These breads have a rougher composition and a stronger taste than wheat bread, and can thus be stored for longer periods of time. Some families may still have leaven they use for baking these bread handed down from generation to the next. *In [[United Kingdom|Britain]] there is a wide variety of traditional bread, often baked in a rectangular tin. *In the [[United States]], the most popular bread has traditionally been soft-textured, usually made with milk and slightly sweet, with a thin crust; this is the type that is generally sold ready-sliced in packages. It is usually eaten with the crust, but some eaters or preparers may remove the crust due to a personal preference or style of serving, as for [[afternoon tea]]. Some of the softest bread including [[Wonder Bread]], is referred to as "balloon bread". Though white "sandwich bread" is the most popular, Americans are trending towards more [[whole grain]] and [[artisanal]] breads. Different regions of the country feature native bread varieties including scali (an Italian-style bread made in [[New England]]), [[Native Americans in the United States|Native American]] [[frybread]] (a product of hardship, developed during the Indian resettlements of the 19th century), and Jewish rye, a bread commonly associated with [[delicatessen]] cuisine. In addition, many foreign styles of bread, particularly the French [[baguette]], the Ashkenazi Jewish [[bagel]], Italian [[ciabatta]] and [[pugliese]], and the Middle Eastern [[pita bread]], have become naturalized in the United States. The [[San Francisco]] Bay Area is world-famous for its crusty [[sourdough]]. *In South Asia ( [[India]], [[Pakistan]], etc.), [[Roti]] or [[Chapati]], types of flat breads, are commonly used. A variant uses mustard flour rather than white flour. Another variant is [[Puri (food)|Puri]], a thin flat bread which is fried rather than baked and puffs up while cooked. [[Paratha]] is another variation on [[Roti]]. [[Naan]], however, is baked in brick ovens and is rarely prepared at home. White and brown breads are also very common, but not as much as [[Roti]]. *[[Jewish cuisine|Jew]]s have traditionally baked [[challah]], a type of [[egg bread]] with a thin, hard crust and a soft, well-leavened center. It is made by wrapping plaits of dough and then lightly baking them in an oven. Challah is sometimes sweetened using [[honey]] and sometimes includes [[raisin]]s. During [[Passover]], unleavened bread in the form of various types of [[matzo]] is required due to the Biblical injunction to avoid any form of [[leaven]] during this time of year. There is some debate within the Jewish community as to whether dairy products are allowed in [[kosher]] bread; some authorities maintain that bread must be strictly [[pareve]] to avoid combining meat and dairy in the same meal, while others feel it is acceptable as long as a sign of some sort (usually a different loaf shape, but others are known) is baked into the loaf to distinguish it from pareve bread. *In [[Morocco]] and West North Africa, a round bread which is roughly four inches tall is used to eat most of the Mediterranean's watery cuisine. They also have a thick and chewy fried bread which is smothered in oil before hand. The Rghifa bread is a staple in Morocco's food and consists of several layers of lightly cooked bread. *In [[Scotland]], another form of bread called plain bread is also consumed. Plain bread loaves are noticeably taller and thinner, with burned crusts at only the top and bottom of the loaf. Plain bread has a much firmer texture than English and American pan bread. Plain Bread is becoming less common as the bread consumed elsewhere in Britain is becoming more popular with consumers. *In [[France]], pan bread is known as ''[[pullman loaf|pain de mie]]'' and is used only for [[toast]] or for making [[stuffing]]; standard bread (in the form of [[baguette]]s or thicker breads) has a thick crust and often has large bubbles of air inside. It is often baked three times daily and is sold totally unwrapped to keep the crust crisp. Some fancy breads contain [[walnut]]s, or are encrusted with [[poppy|poppy seeds]]. *[[Italy]] sports many different kinds of bread with its high geographical variability and its long history of political division contributing to the development of widely different breadmaking recipes and traditions. As a rule of thumb breadrolls are much more popular than large loaves and bread has a small quantity of olive oil mixed in the dough to make it softer and more palatable. *[[Focaccia]] is quite popular in Italy, and is known in [[Provence]] as '''fougasse''' or as '''fouace''' in parts of southern France, the former name is becoming increasingly common and fougasse can now be bought all over France. It is usually seasoned with olive oil and herbs, and often either topped with cheese or stuffed with meat or vegetables. Focaccia doughs are similar in style and texture to pizza doughs. *''[[Stottie cake]]'' is a thick, flat, round loaf. Stotties are common in the [[North East England|North East of England]]. Although it is called a [[cake]], it is a type of bread. *Being the simplest, cheapest and most basic type of food, bread is often referred as a metaphor for "food" in general, in some languages and dialects, such as [[Greek language|Greek]]. *Christian traditional societies (usually in poor communities), used to respect bread since [[Jesus]] symbolised his body with it. The [[sign of the cross]] was performed with the knife on the bread's surface, before the loaf was cut. Sometimes it was considered a sin to desecrate bread (e.g., throw it away). *In [[China]] the traditional Chinese bread is [[Mantou]] a white flour dough that is mostly eaten in Northern China. Can be eaten deep fried or having meat or lotus ingredients inside them (like [[Char Siu Bao]]). *In [[Ireland]], it is traditionally held that the end of a loaf of bread (the 'heel' of the loaf) is the best part of the loaf. Other stories and myths surround this piece of the bread in Irish Mythology. [[Irish soda bread]], developed to make the most of the soft wheat grown in Ireland, is unusual for a European bread in that it is a [[quick bread]], using the reaction of [[buttermilk]] and [[baking soda]] rather than yeast to rise. *[[Southern China]] traditionally adopts [[rice]] as the staple and the more conservative elderly generations of southern Chinese attach a lot of cultural significance to the appearance of rice on the table in a meal. Meals made of bread such as [[sandwich]], however substantial, are considered by the older generations as merely light snacks only. ==References== {{Reflist}} ===Bibliography=== *Kaplan, Steven Laurence: ''Good Bread is Back: A Contemporary History of French Bread, the Way It Is Made, and the People Who Make It''. Durham/ London: Duke University Press, 2006. ISBN 978-0-8223-3833-5 *Jacob, Heinrich Eduard: ''Six Thousand Years of Bread. Its Holy and Unholy History''. Garden City / New York: Doubleday, Doran and Comp., 1944. New 1997: New York: Lyons & Burford, Publishers (Foreword by Lynn Alley), ISBN 1-55821-575-1 * Spiekermann, Uwe: ''Brown Bread for Victory: German and British Wholemeal Politics in the Inter-War Period'', in: Trentmann, Frank and Just, Flemming (ed.): ''Food and Conflict in Europe in the Age of the Two World Wars''. Basingstoke / New York: Palgrave, 2006, pp. 143-171, ISBN 1-4039-8684-3 *{{cite book | first=Reay | last=Tannahill | year=1973 | title=Food in History | publisher=Stein and Day | id=ISBN 0-8128-1437-1 }} *{{cite book | first = Marion | last = Cunningham | year = 1990 | title = The Fannie Farmer cookbook | others = illustrated by Lauren Jarrett | edition = 13<sup>th</sup> edition | publisher = [[Alfred A. Knopf]] | location = New York | id = ISBN 0-394-56788-9}} *{{cite book | first=James | last=Trager | year=1995 | title=The food chronology : a food lover's compendium of events and anecdotes from prehistory to the present | publisher=Henry Holt | id=ISBN 0-8050-3389-0 }} *{{cite book | first=Alan | last=Davidson | year=1999 | title=The Oxford Companion to Food | publisher=Oxford University Press | id=ISBN 0-19-211579-0 }} *{{cite book | first=Harold| last=McGee | year=2004 | title=On food and cooking | publisher=Scribner | id=ISBN 0-684-80001-2}} *{{cite conference | author=D. Samuel | title=Brewing and baking | booktitle=Ancient Egyptian materials and technology. Eds: P.T. Nicholson & I. Shaw. Cambridge: Cambridge University Press | year=2000 | pages=537-576| id=ISBN 0-521-45257-0}} *{{cite book | first=E. J. | last=Pyler | year=1988 | title=Baking Science & Technology 3rd Ed. vols. I & II | publisher=Sosland Publishing Company | id=ISBN 0-929005-02-3 }} ==See also== {{Cookbook|Bread Recipes}} {{Commons|Bread}} * [[Bread clip]] * [[Culinary arts]] *Breadmaking ingredients, techniques and tools ** [[Baker percentage]] ** [[Baker's yeast]] ** [[Bread machine]] ** [[Bread pan]] ** [[Quick bread]] ** [[Sliced bread]] *Culinary uses ** [[Breadcrumbs]] ** [[Breading]] ** [[Sop]] *Types of bread ** [[Beer bread]] ** [[Biscuit]] ** [[Bread roll]] ** [[Brioche]] ** [[Bun]] ** [[Bush bread]] ** [[Canadian White]] ** [[Challah]] ** [[Cornbread]] ** [[Cottage loaf]] ** [[Damper (food)|Damper]] ** [[Flatbread]] ** [[Focaccia]] ** [[Indian bread]] ** [[Lavash]] ** [[Matzo]] ** [[Mantou]] ** [[Naan]] ** [[Pita]] ** [[Portuguese sweet bread]] ** [[Pumpernickel]] ** [[Roti]] ** [[Rye bread]] ** [[Tiger bread]] ** [[Tortilla]] ** [[White bread]] ** [[Zopf]] ==External links== * [http://dinnercoop.cs.cmu.edu/dinnercoop/Recipes/breadtips.html A Guide to Bread] {{cuisine}} [[Category:Breads| ]] [[Category:Staple foods]] [[af:Brood]] [[ar:خبز]] [[an:Pan]] [[ast:Pan]] [[ay:T'ant'a]] [[az:Çörək]] [[zh-min-nan:Pháng]] [[bs:Hljeb]] [[bg:Хляб]] [[ca:Pa]] [[cv:Çăкăр]] [[cs:Chléb]] [[cy:Bara]] [[da:Brød]] [[pdc:Brot]] [[de:Brot]] [[et:Leib]] [[el:Ψωμί]] [[es:Pan]] [[eo:Pano]] [[eu:Ogi]] [[fa:نان]] [[fr:Pain]] [[fur:Pan]] [[ga:Arán]] [[gd:Aran]] [[gl:Pan (alimento)]] [[got:𐌷𐌻𐌰𐌹𐍆𐍃]] [[ko:빵]] [[hr:Kruh]] [[id:Roti]] [[iu:ᕿᖂᔭᖅ/qiquujaq]] [[is:Brauð]] [[it:Pane]] [[hak:Mien-pâu]] [[he:לחם]] [[jv:Roti]] [[ka:პური]] [[sw:Mkate]] [[ku:Nan]] [[la:Panis]] [[lv:Maize]] [[lb:Brout]] [[lt:Duona]] [[jbo:nanba]] [[hu:Kenyér]] [[mk:Леб]] [[ml:റൊട്ടി]] [[ms:Roti]] [[mn:Талх]] [[fj:Madrai]] [[nl:Brood]] [[nds-nl:Brood]] [[cr:ᐲᐧᓭᐋᐃᐦᑯᓈᐤ]] [[ja:パン]] [[no:Brød]] [[nn:Brød]] [[uz:Non]] [[pl:Chleb]] [[pt:Pão]] [[ksh:Brut]] [[ro:Pâine]] [[qu:T'anta]] [[ru:Хлеб]] [[sco:Breid]] [[sq:Buka]] [[scn:Pani]] [[simple:Bread]] [[sk:Chlieb]] [[sl:Kruh]] [[sr:Хлеб]] [[sh:Hljeb]] [[fi:Leipä]] [[sv:Bröd]] [[ta:ரொட்டி]] [[th:ขนมปัง]] [[vi:Bánh mì]] [[tr:Ekmek]] [[uk:Хліб]] [[vec:Pan]] [[wa:Pwin]] [[yi:ברויט]] [[zh-yue:包]] [[bat-smg:Douna]] [[zh:麵包]]