Any fermentable, unmalted grain or ingredient, other than barley malt, added to the mash to provide fermentable sugars in the brewing process, including corn, corn sugar, oats, wheat and rice. Most American lagers from megabreweries are made with adjuncts that are cheaper than barley to reduce production costs and create lighter, less malty beer. Other adjuncts are used to create specialty beers or change the composition of the wort.

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