Wontons are made by spreading a square wrapper (a dough skin made of flour, egg, water, and salt) flat in the palm of one's hand, placing a small amount of filling in the center, and sealing the wonton into the desired shape by compressing the wrapper's edges together with the fingers. Adhesion may be improved by moistening the wrapper's inner edges, typically by dipping a fingertip into water and running it across the dry dough to dissolve the extra flour. As part of the sealing process, air is pressed out of the interior to avoid rupturing the wonton from internal pressure when cooked. Each region of China has its own variations of wonton, examples include Beijing, Sichuan, Hubei, Jiangnan, Jiangxi, Guangdong (Canton), Fujian, etc.

7th or 8th century old dumplings and wontons were found in Turfan.

Cantonese cuisine

In Cantonese cuisine, shrimp filled wonton within minced pork is most commonly served with thin noodles to make wonton noodles. It may also be consumed with red vinegar. The soup is made from boiling shrimp shells, pork bones and dried flounder to give it a distinct taste. Hong Kong wontons were introduced to the area after World War II as street food and later indoor eateries. Wonton is served in variety of sizes with smallest being two wonton and noodles called Sai Yung.

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Sichuan cuisine

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In Sichuan, semi-pentagonal wonton are known as chāo shǒu since after initially folding the wonton skin into a right triangle, each end of the hypotenuse are pressed against the middle of opposite sides, creating an impression of crossed arms/hands. These are often served in a sesame paste and chili oil sauce as a dish called "red oil wonton"