Doupi (Wuhan Tofu Skin)

Doupi is one of Wuhan's canonical breakfast foods, recognised alongside re gan mian (hot dry noodles), mian wo, and tang bao as the four 'great' street foods of the city. The name means 'bean skin' and refers to the thin yellow sheets made from mung bean starch that form the outer casing of the dish — not the common thick tofu (bean curd) block but a paper-thin dried sheet made by cooking mung bean milk into a film.

The structure of a properly made doupi is a kind of savoury pancake sandwich. Two of these thin bean-starch sheets form the top and bottom layers. Between them is a layer of partially cooked glutinous rice mixed with the filling ingredients: pickled mustard greens (zha cai) that provide salt and acidity, reconstituted dried shiitake mushrooms, dried shrimp for depth, finely diced cooked pork (often char siu-style or soy-braised), and sometimes a small amount of bamboo shoot. The assembled stack is placed in a large flat pan lightly greased with lard or oil and pressed down with a spatula to compress the layers together. It is cooked over medium heat until the bottom sheet is golden and slightly crispy, then flipped and cooked on the other side.

The finished block is then cut into squares — the standard serving is three or four squares — and plated. The exterior should be slightly crispy with good maillard colour from the pan; the interior should be sticky and rich from the glutinous rice and the filling components. The combination of textures — crisp exterior, soft and savoury interior — is what makes it distinctive.

Doupi is made and sold from specialist doupi stalls in Wuhan's street market system, most visibly along Hubu Alley (Hubu Xiang), a narrow preserved breakfast street in the old city. The stall operators work on large flat pans over gas burners, making the dish continuously through the breakfast hours. It is eaten on the spot or taken away wrapped in paper.