The easiest answer is none.
Booze contains calories that do not contribute to the improvement of your body in appearance or health.
Always remember, each serving of booze (1 shot of hard liquor, 1 beer, or 1 glass of wine) generally provides 100-150 calories.
Mixed drinks can be a huge source of calories, plus alcohol lowers your inhibitions to food intake. It is a 1-2 punch against fat loss. Staying away from the popular mixed drinks of summertime will help you stay lean despite summer outings.
If you choose to drink, please drink responsibly.