To answer this question, we’d need to know the calorie count of a “standard serving” of each drink. Beer typically comes in 12-ounce servings, while bourbon is typically sold by the shot (1.5 ounces). According to our calculations, a standard serving of beer is about 150 calories and a standard serving of bourbon is about 107 calories. Not surprisingly, beer edges out whiskey on this one—though not by much!