A standard 1.5-ounce (44 ml) shot of ouzo contains approximately 100–120 calories. The exact amount depends on the specific brand and proof level, as ouzo typically ranges from 80 to 100 proof (40–50% alcohol by volume). Since alcohol itself provides 7 calories per gram, the high alcohol content accounts for most of the calorie load. Ouzo contains virtually no carbohydrates, protein, or fat, so nearly all calories come from the ethanol. Some brands may vary slightly in their exact calorie content due to differences in distillation methods or added botanicals, but the 100–120 calorie range is standard for typical commercial ouzo shots. If you're tracking calories, it's worth noting that ouzo is often consumed as part of mixed drinks or with food, which would add additional calories beyond the spirit itself.