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Kilning is a crucial step in the malting process, which is fundamental to beverage production, particularly beer. After grain, typically barley, has been steeped and allowed to germinate, it is dried in a kiln. This drying process arrests enzyme activity but preserves a significant portion of it. The temperature and duration of kilning are carefully controlled to remove moisture and develop specific flavors and colors in the malt through a reaction between amino acids and sugars, forming melanoidins.12

Different kilning temperatures produce various types of malt:
* Lower temperatures are used for lager malts, while higher temperatures are used for ale malts.1
* Specialty malts like crystal, chocolate, and amber malts are created by heating green malt in closed drums at high temperatures, contributing distinct colors and flavors to beers such as stouts and porters.12

The enzymes activated during germination and preserved through kilning are essential for converting starches into sugars during the brewing process, which are then fermented by yeast to produce alcohol and carbon dioxide.12

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2 Britannica Sources
  1. beer - Kilning
  2. malt

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