Thursday, August 27, 2009

BEER --- INGREDIENTS

Water. Beer is approximately 90 percent water. Not all water is ideal for beer production, though it can usually be made so. Since water from any two areas is never exactly the same, breweries continually test samples from each plant location. The water is conditioned or treated when necessary to insure uniformity of product.
Malt. Barley that has been steeped (soaked in water) and allowed to germinate (sprout or begin to grow) is called malt. Malt is the basic ingredient in brewing and is often referred to as the "soul of beer." It contributes to its color and characteristic flavor. In some parts of the world, malt is the only cereal grain permitted to be used in making beer (This is according to the German brewing purification law called the Reinheitsgebot, or Bavarian Purity Order. It was enacted in 1516 by Bavaria's Duke William IV, who declared that beer could be brewed only from malt, hops, and water, with no other additives except for yeast.)
Corn. The primary reason for adding corn grits to the brew is that Corn grits tend to produce the milder, lighter beer preferred by the American consumer. Like malt, corn is a source of starch that is converted to sugar in the brewing process.
Hops. Hops are the dried, ripe blossoms of a perennial vine (Humulus lupulus) that are added to beer brews for flavoring. The characteristic bitter flavor of beer is attributable to the addition of hops or liquid hop extract. Hops also possess antiseptic properties that inhibit the growth of bacteria. This is particularly important in the brewing of the non-pasteurized draft beers.
Brewer's yeast. This is the agent that transforms wort sugar into alcohol and carbon dioxide. It is actually a microscopic cell that multiplies rapidly. At the end of fermentation the yeast population has increased approximately fourfold. It is the enormous number of yeast cells that makes possible the rapid conversion of wort to beer. While all brewer's yeasts have the ability to ferment sugars to alcohol and carbon dioxide, they can differ considerably in their abilities and hence affect beer flavor in various ways.

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