A Steaming Bowl for a Cold Hanoi Day
A soft, white batter served hot, a savory topping of pork and mushrooms, and a light sweet-sour fish sauce to bring them together. Straining, resting and constant stirring are what protect the texture.
Vietnamese and English-language features from VnExpress and Voice of Vietnam describe a similar scene: a chilly day in Hanoi and a bowl of soft white rice batter, served hot enough to steam. Over it go ground pork, wood-ear mushroom, green onion and fried shallot, along with a fish sauce that is both sweet and sour.
This is bánh đúc nóng, and nóng means "hot." The name matters because bánh đúc alone covers several different dishes around Vietnam, including cold sliced cakes with peanuts and sweet southern versions with pandan. This article covers only the hot, savory Hanoi style.
The hard part at home is the batter. It starts as a thin, milky liquid, rests for 30 minutes, then thickens quickly on the stove while you stir without stopping. Once its edge turns translucent and the oils go in, the bowl is mostly a matter of assembly.
The amounts come from one published four-serving home recipe by Mai of MM Bon Appétit. It is one cook's version, not a standard for every Hanoi vendor. This recipe has not been kitchen-tested by Sekai Gohan, so use the visual cues in each step as well as the times.
Ingredients for 4 Servings
Vegetable oil and fish sauce each appear twice because each measure goes to a different part of the dish. Weigh the mushrooms while they are still dry.
Equipment
- Heavy-bottomed pot, to help prevent scorching
- Fine-mesh strainer
- Whisk and mixing bowl
- Wooden spatula
- Small saucepan for frying the shallots
- Frying pan with a lid
- Heatproof plate for spreading the fried shallots
- Food thermometer
- Separate cutting board and knife for raw pork, if you need to cut it
- Small bowl for the sauce
- 4 serving bowls
Choosing and Finding What You Need
Tapioca flour. This sets the stretch of the batter, and 100 g is a large part of the recipe. Look for "tapioca flour" or "tapioca starch" at Asian grocers or online. Potato starch, cornstarch and glutinous rice flour are not confirmed equivalents, so we don't recommend them here.
Fish sauce. It seasons both the topping and the sauce, so it shapes the flavor of the dish. Vietnamese fish sauce (nước mắm) is sold at Vietnamese groceries and in Asian food aisles. Saltiness and fermented aroma vary, so taste yours before making the sauce.
Dried mushrooms. Both amounts are dry weights, and the mushrooms get heavier as they soak. The soaking water is separate from the measured water in the batter and sauce. Don't add it to either one.
Pork and bouillon. Choose ground pork that isn't extremely lean; no specific fat percentage is needed. The bouillon measure is based on granules, so go carefully if yours is a fine powder.
Pot. You can use a regular pot, but a heavy bottom is the better choice for this batter. Consider buying one only if a thin pot keeps scorching.
Fish sauce contains fish, and toasted sesame oil contains sesame. Check the labels on bouillon and sriracha, since their ingredients vary by product. Keep raw pork away from ready-to-eat herbs and serving utensils.
Method: Rest the Batter, Then Stir Until the Edge Turns Translucent
Stove settings aren't the same from one kitchen to the next, so go by what you see in the pot. The batter is ready when it has thickened and its edge is translucent. It should not brown.
Lumps, Scorching and Texture: Prevention Comes First
Straining, resting, a heavy pot and constant stirring work together here. It's much easier to prevent problems than to fix them, and we don't have a tested rescue for scorched or lumpy batter, so we aren't offering one.
| What you want to avoid | What to do | What to look for |
|---|---|---|
| Lumps | Whisk well, strain before resting, and stir constantly once the pot is on the heat | Smooth, flowing batter with no dry flour |
| Scorching | Use a heavy-bottomed pot, keep the spatula moving along the bottom, and lower the heat once the batter begins to thicken | A pale batter with no browning |
| Undercooked or floury batter | Keep stirring over low heat after it thickens | A translucent edge |
| Dark or burnt shallots | Lower the heat when the first edges color, and lift them out at pale gold | Mostly pale gold pieces, with none dark |
| A flat-tasting bowl | Use the full topping and sauce, because the batter itself is mild | Mild batter, savory topping and sweet-sour sauce in each spoonful |
Remember that this is not a dish that should take on color, so a browned bottom is a warning sign rather than extra flavor. If you adjust the sauce to your own taste, treat that as your own variation, since the measures above are the only ones we can give.
Spice, Shallots and Add-Ons
- Heat: Bird's-eye chili, chili oil and sriracha are all optional, so you can leave some bowls mild and offer spice at the table.
- Store-bought fried shallots: Mai's recipe mentions these as an option, and they can shorten the work. Flavor and oil will change, and you won't have shallot oil for the pork. No replacement measure is given, so the home-fried version remains our main recipe.
- Fried tofu: VietNamNet reports it at one Hanoi shop, and VnExpress also mentions tofu as an accompaniment. It isn't part of this recipe, so treat it as an extra you may see elsewhere, not a basic ingredient.
- Meatless or sesame-free versions: We have no confirmed amounts or seasoning for a version without meat. Replacing the sesame oil or using stock in the batter is also unconfirmed, so we aren't presenting any of these as finished recipes.
Storage, Reheating and Food Safety
Mai's recipe includes a storage suggestion for the cooked batter alone, aimed at keeping its texture. Keep it in a lightly oiled container with the surface covered closely, refrigerated for up to 3 days. Reheat it in a pot while stirring, or in the microwave in 1-minute intervals, stirring between them.
General food-safety guidance from FoodSafety.gov, a United States public resource, applies to all cooked leftovers:
- Divide leftovers into shallow containers and refrigerate within 2 hours, or within 1 hour if it is above 32°C (90°F).
- Keep the refrigerator at 4°C (40°F) or below.
- Use refrigerated cooked leftovers within 3–4 days.
- Reheat leftovers to 74°C (165°F), checked with a food thermometer.
One Name, Several Dishes: Where the Hanoi Hot Bowl Fits
Bánh đúc is a family of dishes that changes by region, so searching the name alone can bring up very different recipes. VnExpress separates the hot bowl from bánh đúc lạc, which is cooled, sliced and made with peanuts, and from bánh đúc nộm, served with vegetables. Voice of Vietnam describes the hot Hanoi style separately from southern sweet versions, including those flavored with pandan. Peanuts, pandan and coconut belong to those other styles, and none of them are used here.
The Hanoi bowl is defined by contrast: hot, soft batter under pork, wood-ear mushroom, herbs, fried shallot and sweet-sour fish sauce. VnExpress notes that batter ratios vary from one household to another, which is another reason to treat Mai's amounts as one version rather than the rule.
VnExpress places the dish among Hanoi's snacks for cold days and afternoons, while Voice of Vietnam also connects it with cool, rainy weather and midday eating. These are reported habits rather than fixed rules, so it isn't strictly a winter or afternoon food.
VietNamNet offers a smaller, more personal glimpse. Phạm Thị Nội, owner of Bánh Đúc Nóng Bà Nội, a modest eatery in a narrow lane near Lê Ngọc Hân Street, says the family recipe was learned from a grandmother. That is one shop's story and doesn't tell us how old the dish is. We can't confirm its date of origin or who created it, so we make no claim about either.
If you enjoy Vietnam's rice-flour and tapioca dishes, compare this bowl with others in our Vietnamese recipes. Bánh cuốn is a steamed rice roll, bánh bèo is a steamed dish from Huế served in small dishes, and bánh bột lọc is a translucent tapioca-flour dish. Some ingredients overlap with this bowl, but their methods and regional types are different.
Frequently Asked Questions
Is bánh đúc nóng the same as cold bánh đúc with peanuts?
No. They share the broader bánh đúc name, but the hot Hanoi bowl is served soft and topped with pork, mushrooms and fish sauce. Bánh đúc lạc is cooled and sliced, with peanuts. This recipe contains no peanuts.
Can I use potato starch or cornstarch instead of tapioca flour?
The recipe specifies tapioca flour, and we have no basis for saying a substitute gives the same result. It's best to search for "tapioca flour" or "tapioca starch" at an Asian grocer or online.
How do I avoid lumps and scorching?
Strain the batter, rest it for 30 minutes, cook it in a heavy-bottomed pot and stir constantly along the bottom. Lower the heat once it starts to thicken, and watch for a translucent edge.
Can I make it mild for children?
Yes. The chili, chili oil and sriracha are all optional, so simply leave them out.
How long should I cook the pork?
About 5 minutes is the recipe's guide, but time isn't the safety check. Ground pork should reach 71°C (160°F) on a food thermometer, according to FoodSafety.gov.
Can I make it ahead?
You can store the cooked batter by the texture-focused method above, for up to 3 days in the refrigerator. For all cooked leftovers, follow the general cooling, refrigeration and 74°C (165°F) reheating guidance. The dish itself is meant to be eaten hot, right after assembly.
How long does the whole recipe take?
We don't give a total time. Mai's recipe card lists 10 minutes of prep, 30 minutes of cooking and 40 minutes in total, but the method also includes a 30-minute rest, and it's unclear whether the card counts it. The low-heat stage of frying the shallots has no stated time either.
Do I need an extra tablespoon of oil for the pork?
We read the recipe as no. The ingredient list gives 6 tbsp of oil for the shallots, and the pork step uses 1 tbsp of shallot oil without saying whether that is an additional measure. We take it from the strained frying oil, so no extra oil is listed.
How exact are the spoon measures and heat levels?
The recipe doesn't say whether its spoons are US or Japanese measures, so we keep them as tsp and tbsp without conversion. Its heat levels are relative stove settings of 8/10, 5/10 and 2/10, which we describe as fairly high, medium and low. They aren't temperatures, and the same number won't mean the same heat on every stove.
Sources
- Mai, MM Bon Appétit, "Bánh đúc nóng • Vietnamese savory rice flour pudding." The single four-serving recipe used here, including amounts, technique, listed times and the storage note for the cooked batter. It is one home recipe, not a standard for every Hanoi vendor. https://mmbonappetit.com/banh-duc-nong/
- Khánh Ly, VnExpress Du lịch, "Bánh đúc nóng cho ngày đông." The hot Hanoi bowl and its toppings, how it differs from bánh đúc lạc and bánh đúc nộm, varying household batter ratios, steady stirring, and its association with cold days and afternoons. https://vnexpress.net/banh-duc-nong-cho-ngay-dong-4533971.html
- Voice of Vietnam (VOV), English edition, "Discover Banh Duc - a steamed rice cake of Vietnam." The range of bánh đúc across regions, the Hanoi hot savory style, and its cool-weather snack context. https://english.vov.vn/en/travel/entertainment/discover-banh-duc-a-steamed-rice-cake-of-vietnam-848103.vov
- VietNamNet Bridge / VietnamNet Global, "Discover Hanoi's bánh đúc nóng of Bà Nội." One shop's bowl, including fried tofu, and its owner's account of a family recipe. https://vietnamnet.vn/en/discover-hanois-banh-duc-nong-of-ba-noi-E210330.html
- FoodSafety.gov, "Cook to a Safe Minimum Internal Temperature." Safe temperatures for ground pork and reheated leftovers, in United States public guidance. https://www.foodsafety.gov/food-safety-charts/safe-minimum-internal-temperatures
- FoodSafety.gov, "Game Day Food Safety Tips." Separating raw meat from ready-to-eat vegetables, cooling and refrigeration, and leftover storage and reheating, in general United States home guidance. https://www.foodsafety.gov/blog/game-day-food-safety-tips
