Watch the oil as the cakes go in. They puff, rise to the surface and slowly turn golden, and in Hanoi they're eaten while still hot, dipped in a sweet-sour sauce, with fresh greens on the side. Bánh rán mặn is a light afternoon snack. A smooth shell of glutinous rice flour, crisp outside and chewy within, wraps a pork filling dotted with glass noodles and wood-ear mushroom. That is the whole appeal of the plate: a hot, fragrant fried shell against a bright fish sauce dip.
Bánh Rán Mặn in Hanoi
The name takes a little explaining. On its own, "bánh rán" can mean more than one food. In northern Vietnam it usually means a sweet ball coated in sesame and filled with mung bean paste, the same sweet the south calls bánh cam. Hanoi also makes bánh rán with savory fillings. Bánh rán mặn ("mặn" means salty or savory) is the savory one, filled with pork. For more dishes from the same country, see Vietnamese recipes.
Apart from the name, the savory cake has little in common with the sweet sesame ball. The rice shell is smooth and has no sesame. The filling is raw pork with glass noodles and wood-ear, and the sweet-sour dip takes the place of a sweet center. The dough is glutinous rice flour with a little ordinary rice flour, mashed cooked potato, salt and warm water. It's wrapped around ground pork, carrot, onion, rehydrated glass noodles (miến) and wood-ear mushroom (mộc nhĩ), then fried and served with a dip of sugar, lime juice, water and fish sauce.
Bánh rán has no single fixed formula. Some savory versions add potato starch and sugar to the dough for a larger yield. One Hanoi shop sells sweet bánh rán finished with syrup or sugar next to its own savory-filled version, for afternoon and takeaway customers. The savory versions all share a chewy glutinous rice shell, a pork filling with texture from the noodles and mushroom, a fragrant fried crust, and a fish sauce dip sharp enough to cut through it.
Ingredients for 12 Cakes
Weigh the glass noodles and wood-ear mushrooms dry. The 1 tsp (5 ml) of oil goes into the filling; the frying oil is separate.
Use potato or sweet potato in the dough, not both. The frying oil amount depends on the width of your pan; what matters is enough depth for the cakes to float.
Equipment
- Mixing bowl and a cover or clean cloth
- Two small bowls for soaking the noodles and mushrooms, and a sieve
- Cutting board and knife
- Deep, sturdy saucepan for frying
- Oil thermometer
- Long chopsticks and a slotted spoon
- Wire rack or paper towels for draining
Choosing Flours, Dried Goods and Seasoning
Keep the two rice flours separate. Glutinous rice flour gives the chew, and ordinary rice flour gives a cleaner bite. Check the package to make sure the glutinous flour is made from glutinous (sticky) rice. Japanese shiratamako or mochiko can stand in for it, and Japanese joshinko works in place of ordinary rice flour. These flours are ground differently and absorb water differently, so the same weights won't give the same texture. Go by how the dough looks, not by the measuring jug.
Glass noodles and wood-ear mushrooms are weighed dry. Miến is often sold as mung bean or cellophane noodles. Noodles of different thickness absorb water differently, so judge them by feel after soaking. You'll find dried wood-ear at Asian grocers.
Seasoning powder and fish sauce vary by brand. Hạt nêm and bột canh are Vietnamese seasoning powders, and their saltiness and ingredients differ from product to product. Read the label, and don't simply swap in plain salt one-for-one.
Fish sauce contains fish. Seasoning powders, glass noodles and rice flours can differ in ingredients, and some are made on shared lines, so check each label for allergens. The filling is raw pork wrapped while uncooked: wash your hands, board and tools after handling it, keep the wrapped cakes covered while they rest, and fry until the filling is cooked all the way to the center. Color alone does not prove the pork is cooked.
Method: From Rested Dough to Golden, Floating Cakes
The dough rests for 45–60 minutes and the wrapped cakes rest for at least an hour, so plan ahead. Fry in small batches and keep the heat moderate.
Fixing Common Bánh Rán Mặn Problems
Most problems come down to three things: how much water the dough gets, how well the seam is sealed, and how hot the oil is.
| Problem | Likely cause | What to do |
|---|---|---|
| The dough cracks when shaped | Not enough water, or the flour absorbs more than expected | Work in a little more warm water at a time, within the ¾–1 cup (200–240 ml) range, until the edges stay smooth when pressed |
| Filling escapes or the oil spits | A gap in the seam, trapped air, or wet filling or hands | Keep the center of the dough thicker, seal completely and press out air. Drain the filling well, dry your hands, and lower the cakes in gently |
| Dark outside, raw inside | Oil too hot | Keep to about 300°F (150°C) at the start and medium heat, fry in small batches, and always check the center |
| Filling is hard to wrap | Noodles or mushroom pieces too long | Cut soaked noodles to 2–3cm and slice the wood-ear finely |
If the oil starts out too hot, the shell browns and firms up while the filling is still raw. Start it moderate and raise the heat gradually. Being patient early on is what gives the center time to cook.
Serving and Variations
Serve the cakes freshly fried and hot, with the dip and greens alongside. A few changes still keep the cake savory:
- Sweet potato instead of potato. Use 1.75 oz (50 g) cooked, mashed sweet potato (khoai lang mật) in place of the potato, never both. It adds sweetness, and it holds a different amount of moisture, so watch the dough as you add water.
- Pickles on the side. Serve dưa góp, a pickle of carrot and kohlrabi, alongside the cakes rather than in the filling.
- Milder sauce. Leave the chili out of the dip, or put it on the side so each person can add their own.
Frequently Asked Questions
Why doesn't the recipe give a weight for each cake?
The dough and filling are each divided into 12 pieces. Per cake, the figures work out to about 25g of filling and about 1.75 oz (50 g) of dough, but those per-piece weights don't match the listed ingredient amounts. Don't add or remove ingredients to hit a number. Just divide whatever you make into 12 equal portions.
How much do the glass noodles weigh after soaking?
No soaked weight is given. Weigh 18–20g dry, then soak them, drain well and cut to 2–3cm.
How long do the cakes take to fry?
No total frying time is given. Start the oil at about 300°F (150°C) and wait 1–3 minutes for the skin to set before turning. Then fry until the cakes puff, float and turn evenly golden, and break one open to check that the pork is cooked through at the center.
Can I make them ahead and store them?
There's no storage time for these, so eat them freshly fried and hot.
