Calvert Extra Blended American Whiskey LiterCalvert Extra is a Blended whiskey produced in Clermont, Kentucky and owned by Luxco Inc. which is headquartered in the St. Louis, Missouri. Calvert Extra is frequently referred to as Cocktail Whiskey because of its neutral spirit content. It is made from 70% grain neutral spirits and 30% straight whiskey. The high neutral spirit level makes it very unassuming so that it can be blended with any mixer and not overwhelm the cocktail. It is one of America's top selling blended whiskey.It is bottled at 80 proof Medium gold. Light body. Dry. Reminiscent of apple, herbs, honey. Soft, light texture. A good blend of fruit and spices in a delicate style.