Dumpling (called Jiaozi in Chinese) is a kind of crescent shaped rolled piece of dough filled with meat or vegetables. In some restaurant you'll occasionally find recipes calling for more unusual ingredients such as shrimp and even cucumber.
The filling ingredients are enclosed in round dough that are thicker than a wonton wrapper. The dumplings are frequently boiled, although they may also be pan-fried. Dumplings are eaten with a soy sauce-based dipping sauce that may include vinegar, garlic, ginger, rice wine, hot sauce, and sesame oil.