Calories per Ingredient. Here are the foods from our food nutrition database that were used for the nutrition calculations of this recipe. Calories per serving of Simple Steamed Artichokes. 30 calories of Artichokes, fresh, (0.50 artichoke, medium) 20 calories of Olive Oil, (0.50 1tsp) 5 calories of Garlic powder, (0.50 tsp) 3 calories of Pepper, black, (0.50 tsp)