Sesame seeds

Despite its low glycemic index (G.I. = 35), sesame is a fairly caloric product.

An excerpt from the article 14 facts about Sesame seeds
There is 632 kcal in 100 grams of seeds (one tablespoon is about 10 g and 63 kcal), as well as 5% water, 23% carbohydrates (including 12% fiber), 50% fat and 18% protein.