Essentially crêpes and pancakes use the same base ingredients of flour, sugar, egg, and milk. The primary difference is the ratio of the ingredients. Pancakes have more flour making the batter thicker, whereas crêpes have more milk making the batter thinner inconsistency. The other difference is that pancakes use a leavening agent of baking powder to create thick fluffy pancakes. Crêpes have zero leavening, which teamed with a thin batter, creates delicate lace-like crêpes.