Which of the following is NOT allowed in bourbon production?

Bourbon production is governed by a series of specific regulations that ensure its distinct characteristics and quality. To be classified as bourbon, the whiskey must meet certain criteria, one of which is that it cannot contain any added flavoring or coloring agents. The law dictates that bourbon must be made from at least 51% corn and aged in new charred oak barrels, without any additives that could alter its natural flavor or appearance.

This means that both flavoring and coloring are not permitted in bourbon production, reinforcing the purity and integrity of the spirit. Likewise, using molasses is not allowed, as it does not fit within the traditional grain bill of bourbon, which primarily consists of corn, rye, barley, and wheat.

Given that flavoring, coloring, and using molasses are all prohibited in the production of bourbon, the assertion that all of these practices are not allowed correctly identifies that none of them can be part of legitimate bourbon production.