What process involves the precise grinding of cereal grains to expose starch as much as possible?

The process that involves the precise grinding of cereal grains to expose starch as much as possible is known as milling. Milling is a crucial step in bourbon production as it transforms the grain into a more usable form by breaking down its structure. This increased surface area is essential because during the subsequent mashing process, enzymes in the mash convert the starches into fermentable sugars.

Milling typically refers to the initial crushing and grinding of grains, which can include corn, barley, and rye, essential for whiskey production. Achieving the right particle size during milling helps ensure that the starches are effectively accessed and later converted during mashing, leading to a more efficient fermentation process.

While other processes like mashing, grinding, and fermenting play vital roles in bourbon production, it is milling that specifically focuses on breaking down the grains to expose starches optimally.