Wheat beer is a beer, usually top-fermented, which is brewed with a large proportion of wheat relative to the amount of malted barley. The two main varieties are Weissbier and Witbier; minor types include Lambic, Berliner Weisse and Gose.
Two common varieties of wheat beer are Weißbier (German – "white beer") based on the German tradition of mixing at least 50% wheat to barley malt to make a light coloured top-fermenting beer, and witbier (Dutch – "white beer") based on the Belgian tradition of using flavorings such as coriander and orange peel. Belgian white beers are often made with raw unmalted wheat, as opposed to the malted wheat used in other varieties.
In Britain, wheat beer is not considered traditional; however, sales have increased in recent years. This change has been attributed by some to the reduction in the cost of travelling abroad. This is in line with the rising sales of other speciality products.  It tends to be a hybrid of the continental style with an English bitter, rather than an exact emulation.
Weizenbier or Hefeweizen, in the southern parts of Bavaria usually called Weißbier (literally "white beer", but the name probably derives from Weizenbier, "wheat beer"), is a beer, traditionally from Bavaria, in which a significant proportion of malted barley is replaced with malted wheat. By German law, Weißbiers brewed in Germany must be top-fermented. Specialized strains of yeast are used which produce overtones of banana and clove as by-products of fermentation. Weißbier is so called because it was, at the time of its inception, paler in color than Munich's traditional brown beer. It is well known throughout Germany, though better known as Weizen ("Wheat") outside Bavaria. The terms Hefeweizen ("yeast wheat") or Hefeweißbier refer to wheat beer in its traditional, unfiltered form. The term Kristallweizen (crystal wheat), or kristall Weiß (crystal white beer), refers to a wheat beer that is filtered to remove the yeast and wheat proteins which contribute to its cloudy appearance.
The Hefeweizen style is particularly noted for its low hop bitterness (about 15 IBUs) and relatively high carbonation (approaching four volumes), considered important to balance the beer's relatively malty sweetness. Another balancing flavor note unique to Hefeweizen beer is its phenolic character; its signature phenol is 4-vinyl guaiacol, a metabolite of ferulic acid, the result of fermentation by top-fermenting yeast appropriate for the style. Hefeweizen's phenolic character has been described as "clove" and "medicinal" ("Band-aid") but also smoky. Other more typical but less assertive flavour notes produced by Weißbier yeast include "banana" (amyl acetate), "bubble gum", and sometimes "vanilla" (vanillin).
Weißbier is available in a number of other forms, including Dunkelweizen (dark wheat) and Weizenstarkbier (strong wheat beer), commonly referred to as Weizenbock. The dark wheat varieties are made with darker, more highly kilned malts (both wheat and barley). The Weizenbocks typically have a much higher alcohol content than their lighter cousins.
The four largest brands in Germany are Erdinger, Paulaner, Franziskaner, and Maisel. Other renowned brands are Augustiner, Weihenstephaner, Schneider (a bronze-coloured specialty), and Andechser. Regional brands in Bavaria are Hopf, Unertl, Ayinger, Schweiger and Plank. Aventinus is an example of Weizen Doppelbock, stronger and darker version of Weizenbock, made by the G. Schneider & Sohn brewery in Kelheim.
Witbier, white beer, bière blanche, or simply witte is a barley/wheat, top-fermented beer brewed mainly in Belgium and the Netherlands. It gets its name due to suspended yeast and wheat proteins which cause the beer to look hazy, or white, when cold. It is a descendant from those medieval beers which were flavored and preserved with a blend of spices and other plants such as coriander, orange, and bitter orange referred to as "gruit" instead of using hops.
The style was revived by Pierre Celis at the Hoegaarden Brewery in Belgium and the Celis Brewery in Austin, Texas, and is traditionally made with up to 50% raw wheat rather than wheat malt. The beers have a somewhat sour taste due to the presence of lactic acid or acetic acid, much more pronounced in the past than today. Also, the suspended yeast in the beer causes some continuing fermentation in the bottle.
A minor variety of wheat beer is represented by Berliner Weiße (Berlin White), which is low in alcohol (2.5% to 3% ABV) and intentionally tart. Sweetened syrups of lemon, raspberry or woodruff herb are often added before drinking.
Leipziger Gose is similar to Berliner Weiße but slightly stronger at around 4% ABV. Its ingredients include coriander and salt, which are unusual for German beers.
A variation on the barley wine style involves adding a large quantity of wheat to the mash bill, resulting in what is referred to as wheat wine. This style originated in the United States in the 1980s.
Names and types
Wheat beers vary in name according to the place in which they are brewed and small variations in the recipe. Among those used are:
- Weißbier, short Weiße: "Weiß" is German for "white". These terms are used almost exclusively in the southern German state of Bavaria and in Austria.
- Weizenbier, short Weizen: "Weizen" is German for "wheat". These terms are used in the western (Baden-Württemberg) and northern German regions for Weißbier.
- Hefeweißbier or Hefeweizen: "Hefe" is the German word for yeast, added to indicate that the beer is bottle-conditioned (unfiltered) and thus might have sediment.
- Kristallweißbier or Kristallweizen: "Kristall" being German for crystal, added if Weißbier is filtered clear of sediment.
- Dunkles Weißbier or Dunkelweizen: a dark version of a wheat beer ("dunkel" is the German word for "dark").
- Weizenbock is a wheat beer made in the bock style originating in Germany.
- Witbier (Literally, "white beer") or simply Wit: Dutch language name for the Belgian style of wheat beer.
- La bière blanche (Literally, "white beer"): The French language name for wheat beer.
Bavarian-style wheat beer is usually served in 500 ml, vase-shaped glasses. In Belgium, witbier is usually served in a 250ml glass; each brewery (Hoegaarden, Dentergems, etc.) has its own shape of glass. Berliner Weiße is often served in a schooner.
Kristallweizen (especially in Austria) and American styles of wheat beer are sometimes served with a slice of lemon or orange in the glass. This is not traditional in Bavaria, and is generally frowned upon there. The modern American custom appears to have originated in Portland, Oregon in the mid-1980s, where the Dublin Pub served Widmer Brothers Brewery's Weizenbier with a slice of lemon, to accentuate the citrus flavor of the Cascade hops.
In northern Bavaria, it is common to add a grain of rice to kristallweizen, which causes a gentle bubbling effect and results in a longer-lasting foam. A common item on pub menus in Bavaria is cola-weizen, which is a mix of cola and Weizenbier. Another mixture popular during the summer is a radler variant with a 50–50 mix of Weißbier with lemonade called "Russ", which is the German term for Russian.
When serving a bottled unfiltered wheat beer hold the glass on an angle and pour slowly. With about 10% or 15% left swirl smoothly to suspend the yeast, then add to improve the flavor, scent and appearance.
Weißbiers feature fermentation by-products such as esters (which lend fruity flavors and aromas), especially isoamyl acetate, reminiscent of bananas, and the phenolic compound guaiacol, a metabolite of ferulic acid, which smells and tastes like cloves. Other phenolics sometimes found in Weißbiers evoke medicinal or smoky sensations. The bittering level of most Weißbiers is close to 15 International Bitterness Units, a very low level. Hop flavor and aroma are typically low.
The ester and phenolic aspects are produced by the special type of yeast, rather than the high fraction of wheat in the grain bill.
The carbonation level can range from 5.5 grams per liter (approximately 2.7 volumes; slightly higher than that of most other German beers) to 7 grams per liter, or more. This produces a generous stand of foam, especially in light of the high protein content of wheat malt.
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