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Korn (from German, "grain", Brit. "corn") also known as Kornbrand or Kornbranntwein (English: "grain brandy" or "grain spirit"), is a German colorless distilled beverage produced from fermented cereal grain seed. In the production of Korn only the cereal grain types rye, wheat, barley, oat and buckwheat are permissible. Most of the production is based on rye or wheat; barley and buckwheat are rarely used. Barley is mainly used to obtain the required malt for the brewing process. The addition of food color, flavorings, or sweeteners is not permitted. Korn differs from vodka in that it is distilled to lower alcoholic proofs and less rigorously filtered, which leaves more of the cereal grain flavor in the finished spirit.
Korn must contain at least a minimum of 32% ABV (64 proof). Above 37.5% ABV (75 proof) it may be named Kornbrand, and the name Doppelkorn, with 38% ABV (76 proof), has been used in the market.
Korn is usually consumed neat in shot glasses, but is also popular with a soft drink mixer. In some places, a beer is often ordered together with a Kurzer ("short"), i.e., a shot glass of Korn. This combination is called in German a "Herrengedeck" (English: "Boilermaker") in most parts of Germany. Fruit-flavored products made with Korn are available from some Korn manufacturers, though they are sold as liqueurs since Korn itself cannot be flavored.
Korn is believed to have been produced in Germany since the 15th century. The first Korn production ban was imposed in 1545. A decree of the city council of Nordhausen prohibited the use of grain or malt for the production of spirits. Historians believe beer brewers wanted to defend themselves against the competition of Kornbrand producers, which had increased the cost of grain.
The first "purity law" (German Reinheitsgebot) for the distillation of Korn was established in 1789. The regulation set by the city of Nordhausen stipulated that two thirds rye and one third barley or malt shall be used.
The process for distilling Korn is similar to other grain-based distilled spirits, such as whisky. Grain, normally wheat or rye, is ground usually in a hammermill and then cooked with hot water, forming a mash. The temperature is then reduced, and enzyme-rich ground barley malt or enzyme mixture is added to convert the grain starches into sugar. The mash is then cooled and fermented with yeast, producing ethanol in the mash. This is followed by the distillation process. The spirit is subjected to multiple distillations in order to remove unwanted odors and flavors. The resulting high-proof distillate (about 85% ABV, compared to about 95% for vodka) is diluted with water. To round off and harmonize the bouquet, high-quality Kornbrands are aged in oak, then diluted to the desired drinking strength and bottled.
Korn production in Germany
The industrial production of Korn is concentrated in several regions of Germany: Bad Oldesloe in Schleswig-Holstein, Nordhausen in northern Thuringia, Haselünne in the Lower Saxony district of Emsland and Oelde in Westphalia. In Nordhausen, the company Echter Nordhäuser Spirituosen GmbH produces the Korn brand "Echter Nordhäuser" (Original Nordhäuser). In 1799, Otto von Bismarck's father, Karl Wilhelm Ferdinand, established a Korn distillery at Schönhausen.
Korn market leaders in Germany are the brands Oldesloer Weizenkorn, followed by Strothmann Weizenkorn and Echter Nordhäuser Korn (2004). For Doppelkorn, Echter Nordhäuser Doppelkorn was the market leader in 2007, followed by Berentzen Doornkaat and Fürst Bismarck Kornbrand.
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