Mash Bill

Mash bill refers to the specific blend of grains used in whiskey production. In bourbon, the mash bill must consist of at least 51% corn according to US law, but other ingredients such as rye, wheat and barley also play an important role.

The grains in the mash bill have a direct impact on the whisky's flavour. For example, corn gives a sweeter character, while rye adds spicy notes.

Scotch whiskey often uses only malted barley, resulting in a different flavor profile than American whiskey.