A whiskey distillery is a facility where whiskey is produced through the processes of fermentation, distillation, and aging. The main ingredients used in whiskey production are water, grains (such as barley, corn, rye, or wheat), and yeast. The grains are mashed, fermented, and then distilled to create a high-proof spirit, which is subsequently aged in wooden barrels to develop its flavor. The aging process is crucial, as it allows the whiskey to absorb flavors from the wood and mellow over time. Distilleries often have unique recipes and methods, resulting in various styles of whiskey, including bourbon, scotch, and rye. Visitors to a distillery can often take tours to learn about the production process and sample different types of whiskey.