What is the primary benefit of adding corn or rice to brewing?

The primary benefit of adding corn or rice to brewing is that it lightens the body of the beer due to their high fermentable sugar content. When brewers include these adjuncts, they contribute sugars that are less complex than those found in malt, allowing for a cleaner and lighter mouthfeel in the final product. This is particularly desirable in certain lager styles, where a crisp and refreshing character is sought after.

Corn and rice do not provide significant additional protein, which means they don’t contribute to the beer's mouthfeel or head retention in the same way that malt does. They also do not increase bitterness, which is primarily derived from hops, nor do they enhance the aroma profile significantly. The focus on achieving a lighter body is a crucial aspect of utilizing these adjuncts in brewing, making them valuable tools for brewers looking to create specific beer styles.