Home-styleEasy 28 min serves 2 Vegetarian-ok

Frozen & Thawed Tofu for Hot Pot (Dòng Dòu Fǔ)

Name: Frozen & Thawed Tofu for Hot Pot (Dòng Dòu Fǔ)
Total time: 28 min
Yield: 2 servings
Cuisine: Home-style
Ingredients: firm tofu, block (not silken or soft); cold water, for thawing; light soy sauce; Chinese black vinegar

冻豆腐 · dong dou fu

家庭快手版 · Home version: Family version freezes firm tofu *raw*, then thaws slowly in fridge—no blanching or pressing. This creates irregular, absorbent pores ideal for soaking up broth. Restaurants often deep-fry first for crispness, which we omit for authenticity and ease.

In Harbin winters, my grandmother stored blocks of tofu in the unheated balcony—temperatures dropped below -20°C, freezing them solid overnight. 'The colder it freezes, the fluffier it gets when thawed,' she’d say, crumbling the thawed cubes into our mutton soup like snow.

Recipe author: HǎoWèi Test Kitchen

Home-cooking research team

Reviewed by HǎoWèi editorial team · Last updated 2026-08-29

More tofu recipes →Quick & Easy Vegetarian

Ingredients

firm tofu, block (not silken or soft)老豆腐（非嫩豆腐或内酯豆腐）🛒 local300 g
cold water, for thawing冷水（用于解冻）🛒 local500 ml
light soy sauce生抽🏮 asian10 ml
Chinese black vinegar陈醋🏮 asian5 ml

firm tofu, block (not silken or soft): Must be water-packed firm tofu—check label for 'calcium sulfate' coagulant, not glucono delta-lactone (GDL).

cold water, for thawing: Never thaw at room temperature—risk of bacterial growth in porous tofu.

light soy sauce: Adds umami depth without darkening color.

Chinese black vinegar: Substitute balsamic vinegar if unavailable—but true black vinegar gives deeper tang.

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Instructions

1Drain tofu and pat dry with paper towels. Place uncovered on a parchment-lined tray and freeze solid—minimum 8 hours, ideally overnight.
敞口深冻
🔍 Look for 8–12 小时 · 8–12 hours
Visual: 表面转为不透明淡黄白色；外层无可见冰晶。Surface turns opaque yellowish-white; no visible ice crystals remain on exterior.
You know it's right when: 轻叩发出空响。Tofu sounds hollow when tapped lightly.
2Transfer frozen tofu to a bowl. Cover with cold water and refrigerate 4 hours—do not rush with warm water.
冷水缓化
🔍 Look for 4 小时 · 4 hours
Visual: 豆腐膨大至原体积1.5倍；表面呈海绵状，坑洼深密。Tofu swells to 1.5× original size; surface looks spongy and deeply pitted.
You know it's right when: 水变灰浊；豆腐触感轻盈、富有弹性。Water turns cloudy gray; tofu feels light and springy.
3Drain thoroughly. Gently squeeze each piece between palms to remove excess water—stop when no droplets form.
轻挤余水
🔍 Look for 2 分钟 · 2 minutes
Visual: 豆腐略回缩；表面呈哑光干爽状，不反光。Tofu shrinks slightly; surface looks dry-matte, not glistening.
You know it's right when: 水平托掌，掌心无积水。No water pools in palm when held horizontally.
4Cut into 2.5-cm cubes. In a small bowl, mix light soy sauce and black vinegar. Pour over tofu and toss gently to coat.
酱醋轻拌
🔍 Look for 1 分钟 · 1 minute
Visual: 方块泛薄而均匀酱光；无酱汁积聚。Cubes glisten with thin, even glaze; no pooling liquid remains.
You know it's right when: 每块挂汁不滴落。Each cube holds coating without dripping.
5Let marinate 10 minutes at room temperature. Then add directly to simmering hot pot broth—cook 3–4 minutes until heated through and plump.
热汤直涮
🔍 Look for Medium-high 3–4 分钟 · 3–4 minutes
Visual: 方块再度膨大，呈乳白米色，明显吸饱汤汁。Cubes swell further, turn creamy beige, and absorb broth visibly.
You know it's right when: 无豆腥气；边缘柔润但仍成形。No raw tofu smell remains; edges soften but hold shape.

Tips

· Freeze extra tofu blocks in portioned bags—they keep 3 months frozen.
· Save the cloudy thaw water—it’s rich in soy proteins; add to miso or vegetable broths.
· For richer mouthfeel, pan-sear marinated cubes in sesame oil before adding to hot pot.

Sources & references

Quantities, technique notes, and substitution ratios are cross-checked against established Chinese cookery references and standard food-science sources.

Read our editorial policy
Fuchsia Dunlop, Land of Plenty: A Treasury of Authentic Sichuan Cooking
USDA FoodData Central — ingredient nutrition and portion data
Traditional Chinese family-kitchen practice and regional taste records

Common questions

What type of tofu should I use?

Silken/soft tofu (嫩豆腐) for mapo tofu and soups — silky, falls apart gently. Firm/extra-firm (老豆腐) for stir-fries, braises, and anything you want to keep its shape. If the recipe doesn't say, firm is the safe default for stir-fries.

Source: HǎoWèi ingredient guide

Is there a vegan substitute for oyster sauce?

Yes — 'mushroom oyster sauce' (often labeled vegetarian/vegan) is sold in most Asian grocers and increasingly in mainstream supermarkets. It behaves 1:1 and adds the same glossy umami. Watch labels if you're also gluten-free; most brands are GF, some aren't.

Source: HǎoWèi substitution engine

What's the difference between light and dark soy sauce?

Light soy (生抽) is the everyday salty seasoning — thin and salty, used in most recipes. Dark soy (老抽) is thicker, darker, slightly sweet, and used mostly for color (braises, fried rice). If you only buy one, get light soy. For dark soy's color: 1 tbsp light soy + a pinch of sugar + a few drops of molasses.

Source: HǎoWèi pantry guide