Step 1

Cook the udon noodles according to the package instructions. Drain the noodles and run cold water over then to cool completely and set aside. The cold water prevents the noodles from sticking together.

Step 2

At the same time, place a large wok or high sided pan over high heat and add the sesame oil. Once the oil is heated, add the meat substitute until it is hot throughout, which should take about 5 minutes. Add the garlic, ginger, white parts of the green onions, Sichuan peppercorns and Chinese five spice powder. Stir in well and fry for 1 minute.

Step 3

Pour in the stock, chilli oil, vinegar and soy sauce. Cook for 3-4 minutes while stirring frequently, allowing the liquid to slightly reduce. Add the bok choy and cook for 2-3 minutes. Return the noodles to the wok, combining well, and allow to cook until the noodles have heated through.

Step 4

Serve in bowls with a garnish of peanuts and the green end of the green onions.