Brewer Raw Materials & Ingredients

Question 1

What is the main purpose of malt in brewing?

Accepted Answer

To provide fermentable sugars

Answer

Malted grains, primarily barley, are the foundation of beer, providing the essential fermentable sugars that yeast converts into alcohol and CO2. Beyond sugars, malt also contributes significantly to the beer's color, body, and flavor profile.

Question 2

Which type of hop is commonly used to add bitterness to beer?

Accepted Answer

Bittering hops

Answer

Bittering hops are typically added early in the boil stage of brewing, where the prolonged heat allows their alpha acids to isomerize. This chemical transformation is responsible for imparting the characteristic bitterness that balances the sweetness of the malt in beer.

Question 3

What role does yeast play in the brewing process?

Accepted Answer

To ferment sugars into alcohol and CO2

Answer

Yeast is the crucial microorganism that drives fermentation in brewing. It consumes the fermentable sugars extracted from the malt and metabolizes them into ethanol (alcohol) and carbon dioxide, transforming the sweet wort into alcoholic beer.

Question 4

Which ingredient is used to adjust the pH of the mash during brewing?

Accepted Answer

Acidulated malt

Answer

Acidulated malt is a specialty malt that contains lactic acid, which can be used to naturally lower the pH of the mash. Maintaining the correct mash pH is critical for optimal enzyme activity, efficient starch conversion, and overall beer quality and flavor.

Question 5

What is the primary function of adjuncts in brewing?

Accepted Answer

To modify flavor, mouthfeel, or color

Answer

Adjuncts are non-malt fermentable ingredients like corn, rice, or oats, used to supplement the malt bill. They can lighten the beer's body, color, or flavor, increase fermentable sugars without adding malt character, or introduce unique textures and flavors.

Master Brewer Certification Practice Test

Master Brewer Certification Practice Test

Brewer Raw Materials & Ingredients