5 issues of BBC Good Food for £5
In a wok or large saucepan, bring the stock to the boil. Stir the sauces into the stock, then add the ginger. Simmer for a moment, then add the prawns: if raw, simmer for 2 mins until they turn pink; if cooked, add together with the bok choi, then cook for 2 mins more until just wilted.
Slip all the noodles into the broth, then gently stir to loosen them. Bring the liquid back to a simmer, then cook for 2 mins more to warm them through. Scatter with spring onions and serve straight from the wok, using tongs for the noodles and a ladle for the broth.