Step 1

Heat the oil in a non-stick frying pan. Add the beef and fry until browned all over and starting to crisp. Add the spring onions, pepper, ginger, oyster sauce and beans. Stir-fry for another 5 mins until the veg has softened, then add the noodles and juice of 1 lime. Season well and toss everything together until well combined and heated through.

Step 2

Separate the lettuces into leaves. Pile the noodles into the leaves, sprinkle over the reserved spring onions to garnish and serve with the lime wedges.