Master malt is a term for the highest quality malted barley used in brewing. It is made from the finest barley grains, which are carefully selected and then steeped in water to allow them to germinate. Once the grains have germinated, they are kilned, or roasted, to stop the germination process and develop the desired flavors and aromas. Master malt is typically used in the production of premium beers, and it can impart a range of flavors and aromas, from biscuity and nutty to caramel and toffee.
Master malt is an important ingredient in brewing because it provides the beer with its fermentable sugars, which are converted into alcohol and carbon dioxide by the yeast. It also contributes to the beer’s flavor, aroma, and color. The type of master malt used will have a significant impact on the final characteristics of the beer.