For example, 100 proof is 50% alcohol, while 80 proof is 40% alcohol. The calories in vodka come from the alcohol itself. Pure alcohol contains roughly 7 calories per gram. For reference ...

Unlike gin and vodka cocktails, where the drinker may not ... "I like to suggest bourbons that are 90-100 proof for use in cocktails so that the whiskey flavors are still able to contribute ...