Nassau Valley Vineyards was the first winery in the state of Delaware in the United States, and is currently the largest in the state. When jazz singer Peggy Raley decided to open a winery in Delaware, she first had to get the local state legislature to pass a law allowing wineries in the state. By 1991 she drafted the necessary legislation, and she obtained a license and opened the vineyard in 1993. Until October 2007, when Pizzadili Winery opened, it was the first and only winery in the state.