Smoothing Agent that really takes much of the harshness off newly distilled spirits. Use 2-3 teaspoons per gallon to smooth and mellow whiskey or other distilled spirits. Use 2-4 ounces per gallon as a sweetener and thickening agent for liquors. Contains 100% pure USP food grade kosher glycerin derived entirely from vegetables, Many commercial distilleries use glycerin in their products to improve taste. Higher quality than similar "finishing formula" glycerin or glycerol products that are often derived from coal tar. Gary says "Try this and you will be amazed at the improvement in the taste of your spirits". 8 oz bottle.