Dan Dan Noodles with Beef

Method

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1. 1If you don't have chilli oil, make some: put 2 tbsp chilli flakes in a heatproof bowl, heat 4 tbsp oil until it is close to smoking and pour it over. It should sizzle and turn deep red; leave it to cool.
2. 2Heat the oil in a pan over high heat, add the beef and break it up with a spatula as it cooks for 6-8 minutes. The liquid should evaporate and the meat should brown and crisp at the edges.
3. 3Add 1 tbsp soy sauce, the sugar and the ya cai if using, and fry for another 1-2 minutes. The beef should look dark, glossy and dry; take it off the heat.
4. 4Divide the sauce between two serving bowls: in each, put 1 tbsp sesame paste, 1/2 tbsp soy sauce, 1 tbsp chilli oil, half the vinegar, the Sichuan pepper and garlic. Loosen with 2 tbsp hot liquid to make a smooth, pourable sauce.
5. 5Cook the noodles in plenty of boiling water according to the packet, adding the spinach for the last 30 seconds. Reserve a little cooking water, then drain.
6. 6Add the noodles and greens to the bowls and top with the beef, spring onions and peanuts. Mix thoroughly with the sauce at the bottom before eating; add a spoonful of cooking water if it looks dry.