Night-Market Hot Soy Milk
Sữa đậu nành
Đà Lạt's cold-night street drink — soybeans soaked, blended, strained, and boiled hard, served steaming from a cart with a knob of pandan sweetness.
By Vietnamese Cookbook Kitchen · April 22, 2026
The Central HighlandsThe Subsidy Era era, 1975–1986
Uống- Prep
- 20 min
- Cook
- 25 min
- Serves
- 4
- Level
- Beginner
Before Đà Lạt was a tourist town of flower gardens and strawberry farms, it was a highland outpost living through the same shortages as the rest of Việt Nam. In the bao cấp years after 1975, meat and milk were rationed and often absent, and soy milk — cheap, filling, made from beans a family could grow or buy in bulk — became a nightly fixture sold from carts by lamplight. Decades on, the economy has moved past that scarcity, but the carts haven't gone anywhere; sữa đậu nành is still what fills the thermos cups of Đà Lạt's night market once the temperature drops.
The method rewards patience more than skill: soak the beans properly, blend them fine, strain them thoroughly, and above all, boil the finished milk hard, because raw soy is not something to serve half-cooked. A full five minutes at a rolling boil is the one step in this recipe that isn't negotiable — everything else is a matter of taste, sweetness and pandan adjusted to whoever's drinking it, but the boil protects everyone at the table. Served steaming in a paper cup against a highland chill, it's about as far from fussy as a drink gets.
Do not skip the full boil at the end — raw soybean milk carries compounds that upset the stomach and only heat breaks them down. A hard boil for a full five minutes is not optional here, it's the recipe.
Lời đầu bếp · A word from the kitchen
Ingredientsnguyên liệu
Serves 4
- 200 gdried yellow soybeans — about 1 cup, soaked 8 hours or overnight in plenty of cold water
- 1.4 Lwater, divided — about 6 cups — some for blending, the rest for thinning
- 2pandan leaves, knotted — optional but traditional at Đà Lạt stalls, for aroma
- 60 grock sugar or white sugar — about 1/4 cup, or to taste — start light, you can always add more
- 1pinch salt — rounds out the sweetness; don't skip it
Methodcách làm
Step 1: Soak the beans
Cover the dried soybeans with at least triple their volume of cold water and soak 8 hours or overnight. They'll roughly double in size; drain and rinse them well before the next step.
Step 2: Blend to a slurry
Blend the soaked beans with 800 ml of the water until smooth and milky-white, working in batches if your blender is small. A good blend looks like thin paint, no visible bean fragments.
Step 3: Strain through cloth
Pour the slurry through a nut-milk bag or a few layers of muslin set over a large pot, squeezing hard to extract every drop of milk. Save the leftover pulp (bã đậu) for pancakes or discard it — either way, strain thoroughly, or the milk will taste chalky.
Step 4: Boil hard and long
Add the remaining 600 ml water and the pandan leaves, then bring the milk to a full rolling boil, stirring constantly so it doesn't scorch or boil over. Keep it at a hard boil for a full 5 minutes — this step neutralizes raw soybean's stomach-upsetting compounds and is not optional.
Step 5: Sweeten and strain again
Off the heat, stir in sugar and salt until dissolved, then remove the pandan leaves. If any skin has formed on top or any grit remains, strain once more through a fine sieve for the silky texture a night market cart would serve.
Step 6: Serve hot
Pour into cups or a thermos and serve steaming, the way it's sold from carts in Đà Lạt after dark. It also keeps refrigerated for 2 days, reheated gently or drunk cold, though the hot version is the point on a cool highland night.
Đồ nghề · The tools
Equipment
Fine sieve / muslin
Rây lọcFor straining broth crystal-clear, squeezing coconut milk, and working tamarind pulp through into pure sour. Line it with muslin when the recipe says “clear” and means it.
Shop on Amazon →Blender
Máy xay sinh tốSinh tố — avocado, condensed milk, ice — is Vietnam’s answer to the milkshake, and a chè needs its coconut milk smooth. Any sturdy blender qualifies; the ice does the auditioning.
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Questions from the kitchen
Why does the milk have to boil so long?
Raw soybeans contain trypsin inhibitors and other compounds that interfere with digestion and can cause nausea if the milk is undercooked — a real risk, not folklore. A full five minutes at a hard rolling boil breaks these down; three minutes at a bare simmer is not the same thing and isn't enough.
Can I use a soy milk maker instead of a blender and pot?
Yes, and it's genuinely easier — most machines soak, blend, strain, and cook the milk in one cycle, and their built-in cook cycles are calibrated for the boil this recipe insists on. Follow the machine's bean-to-water ratio rather than this one, since capacities vary.
Why is this drink tied to the bao cấp era?
During Việt Nam's subsidy period after 1975, meat and dairy were scarce and rationed, and soy milk became an accessible source of protein sold cheaply from carts and stalls. The drink outlasted the shortages it answered and is now simply a nightly habit in the highlands, not a hardship food.
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