Fireball Cinnamon Whisky (66 proof, 33% ABV, 1.5 oz serving 108 calories and 11 grams of sugar per serving) – Doesn’t sound horrid until you start doing the math: at 1.5 oz, 11 grams of sugar (which is 2.2 teaspoons or .73 Tablespoons), this converts to 0.38 oz. which is a full 25.33% of the shot.