Jack Daniels Old No 7 Sour Mash Whiskey is a classic American whiskey made from a unique blend of corn, rye, barley malt, and natural flavors. It is aged in charred oak barrels for a minimum of four years, giving it a smooth, mellow flavor. This whiskey is perfect for sipping neat or on the rocks, or for mixing into classic cocktails like an Old Fashioned or Manhattan.