Stinky Tofu (Changsha-Style, Deep-Fried from Fermented Tofu)

Variations

• Changsha style (black): the Hunan version, where the brine contains fermented vegetables and beans that stain the tofu black. Fried, then dressed with soy, chilli oil, garlic and coriander. This page is built on it.
• Taiwanese (pale): the tofu keeps its colour, and after frying it comes with pickled cabbage and garlic soy. The cabbage's acidity cuts the oil, and this is the commonest night-market form.
• Steamed (蒸臭豆腐): steamed instead of fried, served with chilli oil and minced pork. The smell stays far stronger, which makes this the version for the already-converted.
• Dry-fried (乾炒): the Anhui approach — sliced thin and stir-fried with green chillies. A completely different texture from the fried cubes.
• Mala stinky tofu: the Sichuan direction, with Sichuan pepper and doubanjiang (fermented pastes).
• In soup: in Taiwan it also goes into mala-style broth. The point is the honeycomb interior soaking the broth up.

Tips

• Do not ferment it at home. Buy it. Stinky tofu is fermented by steeping tofu in a brine (滷水) kept for months or years, and that brine is itself a living culture built from long-fermented vegetables, shrimp and bamboo shoots. The shortcuts circulating online — steeping tofu in milk or kimchi liquid to make it smell — are not stinky tofu, they are a different food. Here the fermented tofu is not a compromise, it is the ingredient (fermentation basics).
• The smell and the taste go in different directions. The strong smell comes largely from volatile amines and indole compounds formed during fermentation, and frying drives much of it off. So the raw smell is not a fair warning about the eating: the fried result is far milder, and what stays behind is savour (building umami).
• Ventilation is equipment. It is still strong while it fries. Do not start without a window and an extractor.
• Hold 160-170°C. The goal is not a crisp shell but the honeycomb inside. Too hot and the crust sets before the interior can puff; too cool and it absorbs oil and turns heavy (deep frying, cooking oils).
• Drying it is a safety matter. Vacuum packs hold residual brine, and that water flashing to steam in 160°C oil is what throws it out of the pan. It is the commonest cause of a frying burn.
• Split it to sauce it. Dressed only on the outside, the first bite is salt and the inside is blank. Split after frying, the honeycomb absorbs the sauce and one piece tastes even throughout.
• Keep the garlic raw. Fried, the garlic in the sauce turns sweet and the dish loses its edge.
• Eat it straight away. That honeycomb absorbs moisture readily, so ten minutes after saucing the crust is gone (serving temperature).
• Better not to reuse the oil. The fermented aroma transfers into it and shows up in whatever you fry next. Treat it the way you would oil used for fish.
• Worth comparing with cheonggukjang. Both are soybeans fermented briefly into something strong-smelling, and both attract the claim that the worse it smells the better it tastes. The difference is that cheonggukjang ferments two or three days without salt while stinky tofu sits far longer in a salt brine — and both differ again from the lactic fermentation of kimchi.
• As a tofu dish it is the far end of the range. Where sundubu-jjigae and dubu-jorim work with tofu's mildness, stinky tofu turns tofu into a different ingredient altogether — with mapo tofu somewhere in between, using tofu as a vessel for a hot sauce.