All potstickers are, by definition, dumplings. A dumpling is a filling of vegetables, meat, or cheese that is wrapped in soft dough and cooked. Dumplings are made all over the world and are cooked in many different ways - steamed, boiled, baked, or fried. Potstickers are an Asian style of dumpling that are cooked in a skillet, first by steaming and then by searing in a small amount of oil until the outside is crisp.