Wineries exist in all fifty states, but the most predominant (and best) wine comes from Northern California, Oregon, and Washington State, with New York gaining a foothold in the industry. American wines make up about 75% of all wine sales in the US. The appellation system uses the term AVA (American Viticultural Area) to determine where wines were produced, but grape varieties can be planted anywhere in the country. American wineries generally use varietal labeling, and government regulations require that the variety on the label must make up at least 75% of the blend (in Oregon it’s 90%). The words reserve, special selection, private reserve, classic, and so on have no legal definition in the US. Some wineries use these terms to indicate their better wines; others use the words as a marketing tool to move lower quality wines off the shelf.