Bao Buns Recipe: How to Make Steamed Bao at Home

Bao (包) is one of the most traveled foods in Asian culinary history. Originally mantou — plain steamed buns — in northern China, the format spread south and east, picking up fillings, regional techniques, and local flavors at every stop. Today you find bao in Shanghai dim sum carts, Taiwanese night markets, Japanese convenience stores (nikuman), Korean steamed buns (jjinppang), and Western restaurant menus where chefs fill them with everything from duck confit to fried chicken.

The bao at the center of this recipe is the open-folded gua bao style — the Taiwanese "pork belly bun" that became famous in Western food culture — and the classic round baozi shape. Same dough, different shaping.

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The Dough

Bao dough is an enriched, yeasted dough — similar to brioche but steamed instead of baked, and slightly less rich. The characteristic white color and pillowy texture come from bleached cake flour (lower protein, whiter flour) and a small amount of fat.

Ingredients (makes 12 buns):

• 300g cake flour (or all-purpose + 2 tablespoons cornstarch per cup, sifted)
• 1 teaspoon instant yeast
• 2 tablespoons sugar
• 1/2 teaspoon salt
• 1 teaspoon baking powder
• 160ml warm water (not hot — under 40°C)
• 2 tablespoons vegetable oil (or lard for traditional flavor)
• 1 teaspoon rice vinegar (helps with the white color)

Method:

1. Mix dry. Whisk together flour, yeast, sugar, salt, and baking powder in a large bowl.

2. Add wet. Add warm water, oil, and vinegar. Mix until a shaggy dough forms, then knead 8-10 minutes until very smooth and elastic. The dough should not stick to your hands. If sticky, add flour a tablespoon at a time; if dry and cracking, add water a teaspoon at a time.

3. Rest. Cover the bowl. Rest at room temperature 1-1.5 hours until the dough has doubled.

4. Punch down. Knock out the air. Knead briefly, 1-2 minutes — this improves the final texture.

5. Shape (see below).

6. Final proof. After shaping, let buns rest on parchment paper squares 20-30 minutes. They should puff slightly.

7. Steam. Steam over high heat 12-15 minutes for filled baozi, 8-10 minutes for unfilled gua bao shells. The exterior should be bright white and slightly shiny.

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Shaping: Gua Bao (Folded)

1. Divide dough into 12 equal pieces (~40g each). Roll each into a smooth ball.
2. Using a rolling pin, roll each ball into an oval approximately 10cm × 7cm, about 3-4mm thick.
3. Brush the surface lightly with oil (prevents the two halves from sealing during steaming).
4. Fold in half. Place on a 10cm square of parchment paper.
5. Steam. When done, the bun will open easily — the oil prevents it from welding shut.

To fill: Open the cooked gua bao, add filling, and close around it. The bun holds its shape but the split makes it easy to eat without completely enclosing the filling.

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Shaping: Baozi (Filled, Round)

1. Divide dough into 12 pieces. Roll into balls.
2. Flatten each ball with your palm to a circle approximately 9cm across, slightly thicker in the center than at the edges (this ensures the base doesn't tear when pleated).
3. Add 1.5-2 tablespoons of filling to the center.
4. Pleat and seal: hold the bun in your non-dominant hand. Use your dominant hand to pinch and fold the edge over repeatedly, making pleats, working around the circumference. Twist the top to seal. The pleating takes practice — 12-15 pleats is the restaurant standard, but any sealed bun works.
5. Place pleated-side-up on parchment squares.
6. Steam pleated-side-up 12-15 minutes.

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Filling 1: Taiwanese Braised Pork Belly (Lu Rou Fan Style)

The canonical gua bao filling — soy-braised pork belly with a thick, glossy sauce.

Ingredients:

• 500g pork belly, cut into 3-4cm chunks
• 3 tablespoons soy sauce
• 2 tablespoons dark soy sauce (for color)
• 2 tablespoons rice wine (Shaoxing or sake)
• 2 tablespoons sugar
• 1 tablespoon oyster sauce
• 3 cloves garlic, smashed
• 1 star anise
• 300ml water

Method:

1. Brown pork belly in a dry pan over high heat — fat side down first. No oil needed (pork belly has enough fat). Brown on all sides, 8-10 minutes total.
2. Add all other ingredients. Bring to a boil, reduce to a low simmer.
3. Braise uncovered 90 minutes until pork is very tender and sauce has reduced to a thick, glossy coating. Add water if sauce reduces too fast.
4. Remove star anise. The pork should fall apart when pressed.

To assemble gua bao:

• Pork belly chunks (or sliced)
• Quick-pickled daikon (daikon + rice vinegar + sugar + salt, 30 minutes)
• Thin cucumber slices
• Hoisin sauce or sriracha
• Cilantro or green onion

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Filling 2: Korean-Japanese Fusion (Gochujang Chicken + Miso Slaw)

A Borderless Kitchen original — takes the gua bao format in a completely different direction.

Gochujang chicken:

• 400g boneless chicken thigh, cut into bite-sized pieces
• 2 tablespoons gochujang
• 1 tablespoon soy sauce
• 1 tablespoon mirin
• 1 teaspoon sesame oil
• 1 tablespoon honey

Marinate 30 minutes. Pan-fry or grill over high heat until cooked through and caramelized, 6-8 minutes.

Miso slaw:

• 1 cup shredded cabbage
• 1 tablespoon white miso
• 1 tablespoon rice vinegar
• 1 teaspoon sesame oil
• 1 teaspoon sugar

Toss and rest 10 minutes.

To assemble: Gua bao shell + gochujang chicken + miso slaw + sesame seeds + sliced green onion. The spicy-sweet chicken against the cold, tangy slaw inside a pillowy bun is one of the more complete single-bite experiences in fusion cooking.

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The Travel of Bao

The word bao (包, "to wrap") encompasses a spectrum of preparations across Asian cuisines:

• Mantou (China): plain steamed bun, no filling, northern Chinese staple
• Baozi (China): filled mantou — the template for everything else
• Nikuman (Japan): Japanese steamed pork bun, seasoned with soy and ginger, sold year-round in Japanese convenience stores
• Jjinppang (Korea): Korean steamed bun, often filled with red bean paste
• Char siu bao (Cantonese): BBQ pork filling, can be steamed (soft, white) or baked (glazed, golden)
• Gua bao (Taiwan): the folded, open-faced format

Each version reflects the local pantry and eating culture more than it reflects the original. The bao format — wheat dough + steam + filling — is a vehicle, not a destination.