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Huizhou Hairy Tofu
Tofu fermented until it grows a coat of white mould, pan-fried to a tiger-skin crust, then tossed with preserved egg, ham and peas and served with a spicy dip. Adapted for a home kitchen from the original ClouChef R&D report — 徽州毛豆腐, report 65.
Original poster image from clouchef.com (poster: 徽州毛豆腐_65.jpeg). This is the hero poster only, not a step-by-step photo set.
Prep: 3–5 days (fermenting)Cook: 10 minutesTotal: 3–5 days 10 minutesServings: 2Difficulty: HardRegion: Anhui (Huizhou)Flavour: Funky, savoury, spicy
Why this works
The report's fascination is with fermentation as flavour: ordinary firm tofu, kept at 25–28 °C and high humidity for three to five days, grows a white coat of mould that transforms its taste into something deeply savoury and funky, closer to cheese than to bean curd. Frying is then a matter of patience — three minutes on the first side at 180 °C, two on the second — until both faces turn the mottled tiger-skin colour that gives the dish its look. The toppings are not random: preserved egg, ham and peas add salt, richness and colour, and the dip of chilli sauce, sesame oil and garlic is heated before serving, because the report treats unheated garnishes as a safety risk. Home cooks should be candid: the ferment needs a warm, humid spot and several days, and the result smells strong. That is the point, but it is not a weeknight dish.
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Ingredients
| Ingredient | US | Metric | Substitute / note |
|---|---|---|---|
| Fermented hairy tofu | 8.8 oz | 250 g | Firm tofu fermented 3–5 days (see steps); ready-fermented hairy tofu from a Chinese grocer is the practical substitute (adaptation). |
| Preserved egg, diced | 1.1 oz | 30 g | About half an egg, cut 0.5 cm dice, blanched 30 seconds. |
| Ham, minced | 0.7 oz | 20 g | Finely minced; any cured ham works (adaptation). |
| Peas | 0.5 oz | 15 g | Blanched 2 minutes. |
| Salt | 0.1 oz | 2 g | — |
| MSG | 0.0 oz | 1 g | Optional; omit without harm (adaptation). |
| Chilli sauce | 0.5 oz | 15 g | Heated to at least 80 °C before serving per the report. |
| Sesame oil | 1.0 tsp | 5 ml | Heated to 160 °C for drizzling, or use the hot-oil method in the steps. |
| Scallion and garlic, minced | 5 g each | 5 g each | Heated through before serving per the report. |
| Cooking oil, for frying | 1.3 tbsp | 20 ml | — |
| Dip: chilli sauce, sesame oil, garlic mince | 3:1:1 | 3:1:1 | By ratio per the report; garlic heated in hot oil first. |
Equipment
- Flat-bottomed pan
- Warm spot at 25–28 °C with high humidity for fermenting, or a fermentation box (adaptation)
- Thermometer for oil temperature
Steps
- Ferment the tofu (3–5 days). Cut firm tofu into 4 × 4 × 2 cm blocks, keep at 25–28 °C with about 85% humidity, misting with water, until the surface grows white mould. Discard any tofu that smells rotten or shows coloured mould.
- Prepare the toppings. Dice the preserved egg and blanch 30 seconds. Mince the ham and stir-fry over low heat until fragrant, about 1 minute. Blanch the peas for 2 minutes.
- Fry the tofu. Heat about 20 ml oil to 180 °C in a flat pan. Fry the tofu over medium-low heat for 3 minutes until the base is golden, flip, and fry 2 minutes more until both sides are tiger-skin coloured.
- Toss with toppings. Add the preserved egg, ham and peas, toss over high heat for 30 seconds, season with salt and MSG, and make sure the toppings are fully heated through.
- Plate and serve. Arrange the tofu in a 3 × 3 square, top with the toppings, drizzle with chilli sauce and sesame oil heated as above, and scatter scallion and garlic that have been heated through. Serve with the dip of chilli sauce, sesame oil and hot-oil garlic in a 3:1:1 ratio.
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Technique: Technique: ferment warm, fry patiently
Fermentation temperature is a control point: above 28 °C the tofu sours, below 25 °C the mould grows too slowly. In the pan, the first side needs its full three minutes — flipping early breaks the tofu and loses the crust. And every raw garnish in this dish is heated before serving; the report is explicit that unheated scallion, garlic and chilli sauce are a food-safety risk.
Variations
- Ready-fermented tofu (adaptation): if you can buy hairy tofu, skip the 3–5 day ferment and start at the frying step; the dish is otherwise identical.
- Milder dip: reduce the chilli sauce in the dip and raise the sesame oil; the fermented tofu flavour still dominates.
Frequently asked questions
Is the white mould safe?
The white mould on properly fermented hairy tofu is the intended culture. Discard tofu with black, green or pink mould, or a rotten smell.
Can I ferment in the fridge?
No — the report requires 25–28 °C. A fridge is too cold for the mould to grow in 3–5 days.
What does it taste like?
Deeply savoury and funky, like a strong cheese, with a crisp fried crust and a soft centre.
Storage
Best eaten fresh; fried tofu softens on standing. Fermented tofu keeps a few days refrigerated before frying. Leftovers keep 1 day refrigerated; reheat until steaming hot throughout.
Huizhou Hairy Tofu — Recipe Card
Tofu fermented until it grows a coat of white mould, pan-fried to a tiger-skin crust, then tossed with preserved egg, ham and peas and served with a spicy dip.
Prep: 3–5 days (fermenting)Cook: 10 minutesTotal: 3–5 days 10 minutesServings: 2
Ingredients: 250 g fermented hairy tofu; 30 g preserved egg; 20 g ham; 15 g peas; 2 g salt; 1 g MSG (optional); 15 g chilli sauce; 5 ml sesame oil; 5 g scallion; 5 g garlic; 20 ml cooking oil.
Steps: 1) Ferment tofu blocks at 25–28 °C, 85% humidity, 3–5 days until white mould forms. 2) Blanch preserved egg 30 seconds and peas 2 minutes; fry ham 1 minute. 3) Fry tofu at 180 °C: 3 minutes, flip, 2 minutes. 4) Toss with toppings 30 seconds, season. 5) Plate 3 × 3, drizzle heated chilli sauce and sesame oil, serve with 3:1:1 dip.
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Source note: ingredients, quantities and steps are adapted from the original ClouChef R&D report for 徽州毛豆腐 (data/reports/65.md). The report's pricing, margin and marketing sections are deliberately omitted here; no B2B cost is presented as a home-cook cost. The report's ingredient cost table is arithmetically wrong — it prices small quantities of preserved egg, chilli sauce and sesame oil at many times their own stated unit prices, and then claims a negative margin while calling it on-target — so all cost figures are omitted. Original poster image: clouchef.com (徽州毛豆腐_65.jpeg).