Bourbon whiskey is a type of American whiskey that is made from at least 51% corn. The mash bill is the recipe for the grain mixture that is used to make the whiskey. There are many different bourbon whiskey mash recipes, each of which produces a unique flavor profile.
The most common bourbon whiskey mash recipe is 70% corn, 20% rye, and 10% malted barley. This recipe produces a whiskey that is full-bodied and flavorful, with a slightly spicy finish. Other popular bourbon whiskey mash recipes include 60% corn, 30% rye, and 10% malted barley; 51% corn, 45% rye, and 4% malted barley; and 100% corn. The higher the percentage of corn in the mash bill, the sweeter the whiskey will be. The higher the percentage of rye, the spicier the whiskey will be. The higher the percentage of malted barley, the smoother the whiskey will be.