<human>:  What is the difference between a bourbon and a whiskey?
<bot>: The main difference between a bourbon and a whiskey is that a bourbon must be made from a specific grain mix with at least 51% corn, aged in new charred oak barrels, and produced in the United States. Whiskey, on the other hand, is a much broader term that can be made from any kind of grain, anywhere in the world. It can come in a variety of colors, as it is typically aged in used oak barrels or other types of barrels. The flavor of a whiskey also depends on the type of grain used and where it is stored.