Can additives be legally used in bourbon production?

In bourbon production, the regulations set by the U.S. government are quite stringent, particularly concerning the purity and quality of the spirit. One of the foundational rules is that bourbon cannot contain any added flavors or colors. This strict standard ensures that each bourbon displays the true characteristics of its grains, fermentation process, and aging method without the influence of artificial additives. The definition of bourbon specifically requires it to be a product of the grain mash, with a minimum of 51% corn, and it must be aged in new, charred oak barrels, contributing to its distinctive flavor profile without the aid of external additives. This is why the answer indicating that no additives, including flavors or colors, are allowed is correct.

In contrast, although some options suggest legality for certain enhancements like flavor or color, that contradicts the core regulation governing bourbon's production integrity. The emphasis on not allowing additives preserves the authenticity and craftsmanship associated with true bourbon.