Steamed Tuna Bao Buns Recipe Delights American-Asian Dumplings

Steamed tuna bao buns are soft, fluffy dumplings from American-Asian cuisine. They use a simple yeast dough that is steamed, not baked. You can eat them plain, or fill them. This version uses a tuna, pineapple, and peanut filling with barbecue sauce and warm spices. The steps are simple, but the dough needs time to rise.

Measure ingredients before you start. Keep the milk and water warm, not hot, so the yeast works well. Drain the tuna and pineapple well, or the filling can turn wet. Chop the pineapple into small pieces so it sits well inside each bun and is easier to fold and seal.

• Dough: All-purpose flour 300 g
• Rice flour 50 g
• Tapioca starch 30 g (or potato starch 30 g)
• Active dry yeast 3.5 g (½ packet)
• Honey 1 tbsp (about 15 ml)
• Warm milk 120 ml (about 38°C)
• Lukewarm water 120 ml (about 38°C)
• Vegetable oil 1 tbsp (15 ml), plus a little for hands
• Salt ½ tsp
• White sugar 1 tbsp

• Filling: Canned tuna (drained) 200 g
• Canned pineapple in juice (drained, finely chopped) 150 g
• Pineapple juice 1 tbsp (15 ml), optional
• Barbecue sauce 2–3 tbsp (30–45 ml), to moisture
• Spicy mustard 1 tsp (or to taste)
• Shelled peanuts 30 g, lightly crushed
• Seasoning powder: hot paprika ½ tsp, garlic powder ½ tsp, ground ginger ¼ tsp, ground star anise ⅛ tsp, salt and pepper to taste
• Vegeta seasoning 1 pinch (optional)

You do not need special tools, but a steamer is required. Use a metal, bamboo, or electric steamer. If you use a pot with a steamer basket, keep the water level below the basket. Prepare small squares of baking paper so the buns do not stick while steaming.

• Mixing bowl
• Sieve (for sifting flours)
• Spatula
• Measuring cups/spoons or kitchen scale
• Clean work surface
• Steamer with lid
• Baking paper squares (about 8)

Dough method

Add the warm water and warm milk to a bowl. Stir in the honey. Add the active dry yeast and leave it for about 5–10 minutes. It should look a bit foamy. If you use instant yeast, you can mix it with the dry flours and skip this blooming step.

Sift the all-purpose flour, rice flour, and tapioca starch into a bowl. Add the salt and sugar. Pour in the yeast mixture. Mix with an oiled spatula until a sticky dough forms. If it is very wet, add 1–2 tbsp more all-purpose flour, a little at a time.

Knead the dough for about 8–10 minutes. It stays slightly sticky, so oil your hands as needed. Add up to 1 tbsp oil if the dough feels dry. Keep kneading until it feels elastic. Put the dough in a covered, food-safe container with space to rise.

Let the dough rise in a warm place for about 2 hours. It is ready when a gentle poke does not spring back fast. Rising time changes with room temperature. While the dough rises, you can prepare the filling. This rest time also helps the gluten relax, so shaping becomes easier.

Filling method

Add drained tuna to a bowl. Add finely chopped pineapple, crushed peanuts, and the seasoning powders. Mix well until the tuna looks paste-like. Keep the pineapple pieces small. This helps the filling hold together and makes sealing the buns easier when you pinch the dough closed.

Mix in barbecue sauce, a little at a time. The filling should be moist, but not runny. Add 1 tbsp pineapple juice if you want more sweetness. Add spicy mustard to taste. If using Vegeta, add only a pinch. Leave the filling uncovered for about 2 hours to rest.

Assembly and steaming

Divide the risen dough into about 8 equal pieces. Take one piece, a bit larger than a golf ball, and flatten it in your palm. Do not make it too thin. Place a spoon of filling in the centre. Fold and pinch the edges to seal, using a simple pleat.

Place each bun on a small baking paper square. Arrange buns in the steamer with space between them. Bring water to a steady boil, then steam for 10–12 minutes with the lid on. Turn off the heat and rest for 1–2 minutes before opening the lid to reduce collapse.

Serving notes

Serve the bao buns hot, as the dough stays soft and fluffy. They can be eaten plain, or with extra barbecue sauce on the side. If you want a milder filling, reduce the paprika and mustard. For a stronger spice note, add a little more ginger, but keep the mix dry.

Nutritional values (approximate, per bun if making 8)

These values are estimates and change with the exact tuna, sauce, and flour brands you use. Draining the tuna and pineapple well can lower the liquid and help control added sauce. If you add extra barbecue sauce, sugars and sodium can rise.

For best texture, steam and eat the buns on the same day. If you need to hold them, keep them covered so they do not dry out. Reheat by steaming for a few minutes until hot. Keep any leftover filling chilled and use it within a day, as it contains fish.