Bao vs Jiaozi: Understanding the Distinction Between Chinese Dumplings

Walk into almost any Chinese restaurant and the menu will list items that an English translation renders as "bao" or "dumplings" without distinguishing between them. The result is a reasonable amount of confusion at the table. The bao/jiaozi distinction is actually the primary structural division in Chinese filled doughs, and once understood, it organises the entire category.

The leavened versus unleavened divide

Bao (包) are made with leavened dough — yeast or baking powder is added so the dough rises and becomes fluffy. Jiaozi (饺子) are made with unleavened dough — plain wheat flour and water, producing a thin, elastic skin. This is the foundational difference. Everything else — filling, cooking method, occasion — follows from it.

A steamed char siu bao is soft and pillowy because it is leavened bread filled with barbecued pork. A boiled jiaozi has a thin, slightly chewy skin because the dough has not been leavened. They are produced from entirely different dough processes and eating them confirms it immediately.

The bao family

Bao splits into several well-known types:

Char siu bao (叉烧包, barbecued pork bao) comes in two versions. The steamed version has a white, fluffy exterior; the baked version has a slightly sweet, glossy pastry shell. Both contain the same barbecued pork filling. The steamed version is associated with Cantonese dim sum; the baked version is common across Guangdong and Hong Kong.

Cai bao (菜包) are vegetable-filled steamed buns, common as a cheap, filling street breakfast across China. Fillings vary by region: mushroom and glass noodle, cabbage and tofu, or preserved vegetable.

Dousha bao (豆沙包) are sweet red bean paste buns — a staple school canteen item and breakfast food across northern and central China.

Mantou (馒头) is the unfilled bao — a plain steamed bun that serves as the starchy staple in northern Chinese meals the way rice serves in the south. It accompanies braised meat and stews, or is eaten with preserved vegetables at breakfast.

Shengjianbao (生煎包) are pan-fried pork buns particular to Shanghai. The bottom is crisped in oil in a flat pan while the top steams. They contain soup (aspic that liquefies with heat) and require the same careful eating technique as xiaolongbao. A Shanghai institution since at least the 1920s.

The jiaozi family

Jiaozi (饺子) use an unleavened wheat-flour skin wrapped around filling, then sealed by pinching. The three cooking methods produce noticeably different results:

Shuijiao (水饺, boiled): the most common form. Cooked in boiling water until they float and continue for two minutes. Associated with northern China and specifically with Chinese New Year gatherings, when families make them together. The standard filling is pork and cabbage or pork and chive.

Guotie (锅贴, potstickers): pan-fried on one flat side, then water added to the pan and the lid placed on to steam the top. The bottom crisps and browns while the top remains tender. A common Beijing street breakfast.

Zhengjiao (蒸饺, steamed): steamed in bamboo baskets, similar to the result of boiling but with a slightly firmer skin.

The wonton branch

Wonton (馄饨) shares the unleavened skin with jiaozi but uses a significantly thinner wrapper and a much smaller filling portion. The thin skin is designed to dissolve into broth, which is the standard serving format — wonton soup (馄饨汤). Cantonese wonton soup, with prawn-stuffed wontons in a clear pork and fish broth, is the reference version. Northern varieties tend toward more robust broth and pork-only filling.

The skin used for wontons and the skin used for jiaozi are different products at the market — wonton skin is thinner and more delicate.

Siu mai and har gow — the dim sum branch

Siu mai (烧卖) are open-topped dumplings used in dim sum — a cyliner of pork and prawn filling enclosed in a thin wrapper with the top deliberately left open and garnished with a dot of orange roe or carrot. They are steamed.

Har gow (虾饺) are steamed prawn dumplings with a translucent wheat-starch (not wheat-flour) wrapper that has a distinctly different texture — slightly sticky and glassy rather than elastic. The wheat-starch wrapper is considered a marker of skilled dim sum work because it is more difficult to handle.

What about xiaolongbao

Xiaolongbao (小笼包, soup dumplings) are technically in the bao family — the name contains the character for bao — but are made with a thin, slightly leavened dough that places them in an intermediate category. They are filled with pork and aspic that liquefies inside during steaming, producing soup inside each dumpling. Eating technique: place gently in a spoon, bite a small hole in the side, sip the soup, then eat the dumpling. A visitor who bites straight through will lose the soup and burn their mouth.

The reference xiaolongbao is from Nanxiang, a town now absorbed into Shanghai's suburbs, where the original restaurant opened in 1871. The soup-to-skin ratio and thinness of the skin are the standard by which versions elsewhere are judged.

Practical takeaway

A simplified ordering guide:

• Fluffy, pillowy exterior → bao family; leavened dough
• Thin, elastic skin, sealed crescent or pleated shape → jiaozi family; unleavened dough
• Thin, nearly transparent skin, served in broth → wonton family
• Open-topped, at dim sum → siu mai
• Glassy skin, prawn filling, steamed → har gow (wheat starch, not wheat flour)
• Pan-fried with crisp bottom, soup inside → shengjianbao (Shanghai) or guotie (potsticker)
• Thin leavened skin, soup inside → xiaolongbao

The Chinese menu distinguishes all these clearly; the problem is mostly one of English translation flattening the categories. Ask the serving staff to point at photographs — almost every Chinese restaurant has them.