Bún Đậu Mắm Tôm: Soft Noodles, Crisp Tofu and a Dip That Defines the Plate
Fresh, soft bún; tofu that is crisp outside and tender inside; cool herbs and cucumber; and a whipped, pungent shrimp-paste dip kept in its own bowl. The dip is the center of the dish.
Around lunchtime in Hanoi, a bún đậu stall can draw a crowd. The city's MyHanoi cuisine feature describes the scene: a pan of frying tofu, baskets of white rice vermicelli, bundles of herbs, a pot of shrimp paste, and diners on low plastic stools. Tofu comes out of the fat hot and golden, is set on a tray beside the noodles and herbs, and everyone dips into the same sharply aromatic sauce.
The name lists the dish's three parts. Bún is rice vermicelli, đậu is tofu, and mắm tôm is fermented shrimp paste. There is no broth: this is a platter, not a noodle soup, and what holds it together is the dip. The contrast is the point: soft fresh noodles and the tender inside of the tofu, a crisp fried surface, fresh herbs and cucumber, and a concentrated, fermented sauce that ties every bite together.
This recipe follows one Hanoi-style platter by Bùi Thủy, published on VnExpress Cooking, which adds simmered pork hock and fried chả cốm to the tofu. It is labeled for 4–6 people. One change is made for safety: the pork is judged by its center temperature, using guidance from Japan's Ministry of Health, Labour and Welfare, rather than by a clock time or the color of its juices.
This recipe has not been kitchen-tested by Sekai Gohan. The amounts and order come from the published recipe described above, with the pork doneness check and shrimp-paste handling adjusted as explained in this article.
For more dishes from the same country, see our Vietnam page.
From Hawker Tray to Full Platter: Hanoi's Bún Đậu
Bún đậu mắm tôm is tied to Hanoi and northern Vietnam. A cultural article on the Hanoi Food Safety Information Portal describes an earlier, simple platter of fresh bún lá (rice vermicelli pressed into flat sheets and cut into portions), fried tofu and mắm tôm, sold by mobile vendors. The same article says vendors from outside Hanoi carried the dish to other parts of Vietnam, and contrasts the old hawker trays with newer, more varied restaurant platters. It is a city portal's account, not a dated historical record, so no founding date is given here.
VnExpress Cooking draws a similar line between then and now. Its feature on Hanoi bún đậu past and present describes the earlier form as bún with fried tofu and whipped mắm tôm, and names kinh giới (Vietnamese balm) as a characteristic herb. Later platters add pork hock, fried chả cốm, offal, nem (fried spring rolls) and other toppings. The recipe here is one of those fuller, present-day platters, chosen because it gives clear amounts for pork and chả cốm. The simpler bún-tofu-mắm tôm form is a different, lighter way to serve the dish, not a scaled-down version of this recipe.
MyHanoi's feature lists herbs seen on Hanoi trays as kinh giới, mint, Vietnamese coriander and perilla. This recipe uses kinh giới and perilla.
Other Vietnamese rice-vermicelli meals work differently. Bún chả, also from Hanoi, pairs bún with grilled pork and its own dipping sauce. Bún thịt nướng is a grilled-pork vermicelli bowl. Bún bò Huế, from central Vietnam, is a noodle soup. Bún đậu has no broth and no grill; it is fried tofu and a shrimp-paste dip.
About time
The VnExpress page lists 50 minutes. That figure is not used here as a total. Pork hock pieces differ in size, the pork is cooked until its center reaches the safe temperature rather than for a set time, and the recipe calls for a few hours in the refrigerator after the ice bath before slicing. Plan the day around the pork.
Ingredients for 4–6 Servings
Mắm tôm contains shrimp, and tofu contains soy. Check the labels of the chả cốm and any packaged noodles for their ingredients and allergens. This dish contains pork.
Equipment
- Separate cutting boards: one for raw pork, one for herbs and cooked food
- Sharp knife
- Food-safe kitchen twine
- Pot large enough for the tied pork hock
- Instant-read food thermometer
- Clean tongs
- Clean bowl for the ice bath
- Clean cloth for blotting tofu
- Frying pan
- Chopsticks or a turner
- Draining rack
- Small bowl and spoon or whisk for the dip
- Measuring spoons
- Kitchen scale
- Serving platter and a separate dip bowl
- Refrigerator
Shopping and Choosing: Fresh Bún, Tofu, Pork and the Right Shrimp Paste
Fresh bún. The 800 g in this recipe is fresh, ready-to-eat bún, not dried noodles. Look for it at Vietnamese or Asian grocers. Dried rice vermicelli has a different texture, and 800 g of dried noodles would make far more than the platter needs. If dried noodles are all you can find, cook them according to the package and use that package's own cooked-yield information to judge the amount. Treat it as your own adjustment, not a same-weight swap.
Tofu. Tofu is counted in pieces (bìa) with no set weight or size. Supermarket tofu blocks vary widely, so eight pieces does not mean eight retail packs. Aim for eight small slabs.
Pork hock. Ask for skin-on, boneless pork hock or shank (chân giò in Vietnamese). It is a different cut from lean loin; the skin is part of the sliced pork's texture.
Chả cốm. These are pork patties with green cốm (young rice) grains through them. They are not nem rán, the fried spring rolls some restaurant platters also add. If you buy chả cốm packaged or frozen, follow its label for handling and cooking, and check its ingredient list.
Mắm tôm. Fermented shrimp paste is the heart of the dish. It is not fish sauce, not mắm nêm, and not dried shrimp or shrimp powder, and none of these is a substitute. Because the dip in this recipe is mixed and served without cooking, choose a sealed jar whose manufacturer labels it as pasteurized and suitable for eating directly, and follow that product's own instructions. The product-specific example and its storage directions are given under Food Safety and in the Sources list. If a jar's label does not clearly allow direct use, do not use it for this uncooked dip.
White liquor. Use a clear white liquor; don't assume it means Japanese sake.
Herbs. Kinh giới and perilla are the herbs in this recipe. If you can't find kinh giới, the platter will taste different; Hanoi trays also feature mint and Vietnamese coriander, but that is a change in the dish, not part of this recipe.
Method: Pork First, Tofu Last
Start with the pork, which needs safe cooking and then hours of chilling. Do all raw-pork work first, then wash your hands and tools before handling herbs, noodles or cooked food. Fry the tofu close to serving so it stays crisp.
When Things Go Wrong
| Problem | Likely cause | What to do |
|---|---|---|
| Tofu sticks to the pan or tears | Surface was wet, or it was moved before the first side set | Blot the tofu well, and wait until the underside is golden before turning |
| Tofu has gone soft by the time you eat | Fried too early | Fry it last, close to serving, and drain it on a rack rather than a plate |
| Pork center hasn't reached 75°C | Thick roll; simmering time varies | Keep simmering and check the thickest center again until it holds 75°C for at least 1 minute |
| Pork crumbles when sliced | Not chilled enough | Return it to the refrigerator until firm, then slice with a sharp knife |
| Fresh bún isn't available | Specialty item | Use dried rice vermicelli cooked by its package directions, judging the amount by the package's cooked yield. The texture will differ |
| The shrimp-paste label doesn't say it can be eaten directly | Product made for cooking | Don't use it in this uncooked dip. Look for a jar labeled pasteurized and ready to eat |
Variations Within Bounds
- Lard or oil. Either can be used for frying the tofu and chả cốm.
- Lime or kumquat. Either works as the citrus in the dip.
- The simple Hanoi form. VnExpress and the Hanoi Food Safety portal both describe an older platter of just bún, fried tofu and mắm tôm. It is a lighter way to serve the dish; skip the pork and chả cốm and keep the dip.
- Restaurant extras. Some platters add nem rán (fried spring rolls) or pork offal. No amounts are given for these here, so they are not part of this recipe.
- A different dip. VnExpress notes that some diners who don't eat mắm tôm choose a sweet-sour fish-sauce dip instead. That is a different sauce and changes the dish's defining pairing; it is not a substitute within this recipe.
Food Safety and Leftovers
Japan's Ministry of Health, Labour and Welfare sets out six household points for preventing food poisoning, and they map onto this recipe step by step.
- Buying. Check dates, and get the pork home cold.
- Storing. Refrigerate foods that need it without delay, keeping raw pork and its juices contained. A household refrigerator should be 10°C or below.
- Preparing. Wash your hands, and keep raw-pork boards, knives and juices away from herbs, noodles, tofu and cooked food.
- Cooking. Cook pork until the center reaches 75°C for at least 1 minute. Apply the same check to chả cốm that contains raw pork, or follow its package directions.
- Serving. Use clean utensils and dishes, and don't leave the food at room temperature for a long time.
- Leftovers. Put leftovers in clean, shallow containers, cool them quickly and refrigerate them. Reheat them thoroughly before eating, and throw away anything you have doubts about.
For the shrimp paste itself, follow the label of the jar you bought. TrungThành's page, for its own product, says to keep it away from sunlight and high heat and, after opening, to close the cap tightly and store it at 20–25°C. That instruction is for that product only and does not apply to other brands.
Frequently Asked Questions
Is bún đậu mắm tôm a noodle soup?
No. It is a platter of fresh rice vermicelli, fried tofu and, in this version, pork and chả cốm, eaten with a shrimp-paste dip. There is no broth. If you want a Vietnamese noodle soup, bún bò Huế from central Vietnam is a very different dish.
How much sugar is "1/2–1 spoon"?
The Vietnamese recipe measures the sugar with a "thìa" (spoon) without saying which size, while the shrimp paste is measured in thìa canh (tablespoons) and the liquor in thìa cà phê (teaspoons). Rather than guess, this article keeps the original wording. Use the range as a guide and taste the dip as you go.
Why use a thermometer instead of a cooking time?
The published recipe simmers the pork for 15–20 minutes and checks that a skewer brings up no pink liquid. Neither is a reliable safety check, and hock size varies. Japan's Ministry of Health, Labour and Welfare gives a center temperature of 75°C for at least 1 minute (or an equivalent heating method) for pork, so that is what this article uses.
Do the lime, liquor or hot fat make the shrimp paste safe?
No. The original recipe page says the liquor and hot fat help reduce bacteria in the paste, but that claim is not relied on here. They are seasonings. Because the dip is not cooked, use a jar whose manufacturer labels it pasteurized and ready to eat directly, and follow its instructions.
Where does the chili go?
The recipe lists fresh chili but gives no amount and doesn't say where it goes. In this article it is added to the dip to taste. That placement is an editorial choice.
Is chả cốm the same as nem rán?
No. Chả cốm is a pork patty speckled with green young rice grains. Nem rán is a fried spring roll. Some restaurant platters include both, but this recipe uses only chả cốm.
Can I make it without pork?
The older Hanoi form is just bún, fried tofu and mắm tôm. Leaving out the pork hock and chả cốm brings you closer to that. The dip is made from shrimp, though, so the dish is not vegetarian.
Sources
- Bùi Thủy, "Cách làm món bún đậu mắm tôm Hà Nội," VnExpress Cooking. The recipe followed in this article: 4–6 servings, the amounts of tofu, fresh bún, pork hock and chả cốm, the dip, the frying and pork-cooking method, and the chilling step. https://vnexpress.net/doi-song-cooking-bun-dau-mam-tom-ha-noi-4886948.html
- Bùi Thủy, "Bún đậu mắm tôm Hà Nội xưa và nay," VnExpress Cooking. The simpler earlier form of bún, fried tofu and whipped mắm tôm; later toppings; bún lá and kinh giới; the separate sweet-sour fish-sauce dip some diners choose. https://vnexpress.net/doi-song-cooking-bun-dau-mam-tom-ha-noi-xua-va-nay-4649104.html
- Hanoi Food Safety Information Portal, "Bún đậu mắm tôm: Từ gánh hàng rong đến không gian đương đại." The simple platter sold by mobile vendors, the spread of the dish beyond Hanoi, and the shift to more varied restaurant platters. https://antoanthucpham.hanoi.gov.vn/bun-dau-mam-tom-tu-ganh-hang-rong-den-khong-gian-duong-dai-hanh-trinh-chinh-phuc-ban-do-am-thuc-kinh-ky-239260518050343663.htm
- MyHanoi, "Bún đậu mắm tôm." The lunchtime street-stall scene, vendors' equipment, and the herbs served on the tray. https://myhanoi.vn/iv/detailcuisine/?id=cuisine_13&t=bun-dau-mam-tom
- Ministry of Health, Labour and Welfare (Japan), "家庭での食中毒予防" (Preventing food poisoning at home). The six household points for buying, storing, preparing, cooking, serving and leftovers, and the 10°C refrigerator guideline. https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/shokuhin/syokuchu/01_00008.html
- Ministry of Health, Labour and Welfare (Japan), "食品、添加物等の規格基準の一部を改正する件について." Pork heating guidance including a center temperature of 75°C for at least 1 minute, and the warning about cross-contamination from raw meat. https://www.mhlw.go.jp/web/t_doc?dataId=00tc1154&dataType=1&pageNo=1
- TrungThành Foods, "TrungThành Shrimp Paste 150gr." One manufacturer's pasteurized shrimp paste labeled for direct eating or cooking, with its own storage instructions. Product-specific only. https://trungthanh.com.vn/products/trungthanh-shrimp-paste-150gr
