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For centuries, brewers have been making wheat
beer. Wheat was employed for several reasons. It was plentiful and gave brewers
more raw materials for making beer, provided good 'heading' properties, and
made a very drinkable beverage. These properties are as desirable as they were
in ancient times.
Despite their resurgence in popularity,
wheat beers remain a mystery to most Americans. Wheat beer is popular throughout
Germany, and there are local differences in the style. Even the names vary-
weisse, wizen, and hefeweizen. Despite this, German wheat beers do share some
common characteristics. Though German-style wheat beers come from the land of
lagers, they fit securely in the ale category. Therefore, you would expect to
find fruity esters* in the aroma, most common is the smell of banana. Adding
to the aromatic complexity, a trace of clove supplies a spicy balance. The ingredient
that causes this aroma and taste is the 'Weinstephan' yeast developed in Germany.
One is likely to think of Banana-Nut bread when enjoying a German-style wheat
beer. This characteristic sets German Hefeweizens apart from most American Wheat
Beers. The major US brewers that produce hefewizens (Widmere, Pyramid and Michelob)
use American Ale yeast to make their beers. This produces a much cleaner citrus
flavor and is not as complex as the German beers. In addition, the finished
product can be served in as little as ten days.
The heading comes from the high amount of protein in wheat, which
breaks surface tension and produces a big, thick, creamy crown of foam. Of course,
these protein molecules cause another easily observed trait- cloudiness. Proteins
are long molecules and have a length sufficient to refract light; thus, wheat
beers will appear quite hazy. However, some brewers use a filtering process
that renders the beer bright and clear, especially the American versions. Filtered
American wheat beers tend to label as such, while the unfiltered are generally
called Hefeweizen. Literally translated, hefeweizen means yeast-wheat. Although
the yeast employed in American hefewizens is different than in the German, it
is left in the beer to give it the cloudy characteristic.
A layer of sediment in the bottom of the bottle also marks a wheat
beer, most frequently in the opaque versions known as hefeweizen (this hefeweizen
collects in great quantity at the bottom of kegs, ergo, draft wheat beer should
be stored upside down or on its side). When pouring a hefewizen, Germans will
leave a little beer in the bottle and swirl it to mix up the sediment, then
pour it on top of the head.
What about the taste? It varies too. The range of wheat
beer runs from light to bubbly to tangy to malty and all combinations thereof.
There are also dark (dunkle wizen) versions. The majority has considerable effervescence
and a tangy palate. Because of the hazy layer of sediment, people sometimes
mistakenly conclude that these beers have gone bad, but these are desirable
traits derived from the protein and brewers yeast in the wheat beer.
For summer refreshment, the tangy characterof the wheat beer is pleasant natural thirst quencher. Whatever the variety, wheat beers do share one universal trait; they are popular in the summer months. In addition, the adding of fruit to the beverage
is traditional in Germany, raspberries, blueberries, and of course, lemon is very common. The fruit flavors compliment the natural ale fruitiness produced by the yeast.¹
*Esters: Chemical compounds in beer produced as a by-product of fermentation. Alcohol and weak acids combine to produce aromatics regularly found in ales. Beer drinkers describe the effect as fruity.
¹Much of the above history was taken from The Beer Drinker's Bible, by Gregg Smith & Carrie Getty.