Whiskey is a spirit made from fermented grains, usually barley, corn, rye, or wheat. It is typically distilled in a pot still and then aged in oak barrels. In the United States, the three most common types of whiskey are bourbon, rye, and Tennessee whiskey.

The Old Fashioned is a classic cocktail that dates back to the 1800s. It is made with whiskey, sugar, bitters, and water. The drink can be served on the rocks or neat.

Most people use …