American whiskey labeled as one of these types, the whiskey must be distilled to no more than 80% alcohol by volume (160 U.S. proof) to ensure the flavor of the original mash is adequately retained, and the addition of coloring, caramel, or other flavoring additives is prohibited. All of these, except corn whiskey, must be aged at least briefly (although no minimum aging period is specified) in charred new oak containers. These restrictions do not exist for some similarly named products in some other countries, such as Canada. American corn whiskey does not have to be aged at all – but, if
Whiskey Rebellion Farmers living west of the Appalachian Mountains distilled their excess grain into whiskey, which was easier and more profitable to transport over the mountains than the more cumbersome grain. A whiskey tax would make western farmers less competitive with eastern grain producers. Additionally, cash was always in short supply on the frontier, so whiskey often served as a medium of exchange. For poorer people who were paid in whiskey, the excise was essentially an income tax that wealthier easterners did not pay. Small-scale farmers also protested that Hamilton's excise effectively gave unfair tax breaks to large distillers, most of whom