Soft steamed white bun with a hollow filling pocket — wrapper for char siu bao and Taiwanese gua bao. Different from filling-less mantou.
Folded steamed bun with filling cavity dates to Song-era Hangzhou banquet menus. The Cantonese filled-bao tradition (char siu bao, lotus-paste bao) crystalized in 19th-century yum cha tea houses; Taiwan's Hokkien gua bao folds the wrapper into a clamshell over braised pork around the same period.
Hong Kong's Tim Ho Wan opened in 2009 in Mong Kok and earned a Michelin star within a year for char siu bao baked-style ('polo cha siu bao'). Taipei's Lan Jia (蓝家割包) at NTU is the gua bao benchmark since 1985. China sells over 70M bao a day through chains like Bao Luo Wan and Liwayway.
Snow-white, pillow-soft, faint sweet-milky aroma, slight chew. Naturally burst three-way top (Cantonese 'smiling bao' / 'birdcage' shape), not pleated, or smooth fold for gua bao. Tear or bite around the filling pocket. Steam-glossy, never browned.
Low-protein bao flour (8-9% gluten), sugar 10%, baking powder + yeast double-leaven, lard or oil for whiteness. Bamboo-steamer 100°C 12 minutes — cover-towel catches drips. The double-leaven is what makes bao softer than yeasted-only Western steamed buns; the low-gluten flour keeps the snow-white color.
Variations
Cantonese cha siu bao (BBQ pork, naturally burst 'smiling bao' top), nai wong bao (custard, yellow), lin yung bao (lotus paste), Shanghai sheng jian (pan-fried bottom, soup-filled), Taiwanese gua bao (clamshell fold, braised pork belly), Tianjin Goubuli (18-pleat dictum, century-old shop).
On the Palate
Where Bao (Plain Steamed) sits in the Chinese flavor cloud
Ingredients
Serves 8How it's made
6 steps · 27 min active + 1 hour 20 min waiting
- 15 min
Mix 500 g cake flour + 250 ml warm milk + 7 g yeast + 60 g sugar + 30 g lard + pinch salt.
- 210 min
Knead 10 min until very smooth and elastic.
Watch outKnead until the dough is silky-smooth and springs back slowly — rough dough steams up bumpy instead of snow-white.
- 345 min
First rise 45 min.
- 412 min
Divide into 60 g pieces; roll into oval discs; fold over for half-moon pocket.
- 520 min
Place on parchment; second proof 20 min.
- 615 min
Steam 12 min over boiling water; rest 3 min after turning off heat.
Watch outKeep the lid on the full 3-minute rest after the heat's off — lift it early and the sudden cold air shrivels the buns.
