Start with your veg prep: peel and finely slice the garlic and ginger, trim and finely slice the chilli(es) and spring onions, then deseed and finely slice the pepper. Finely slice the mangetout, and quarter the baby corn lengthways. Pick and roughly chop the coriander, then thinly slice the steak. Cook the egg noodles in boiling salted water according to the packet instructions, then drain and set aside. Heat a splash of vegetable oil in a large wok or a heavy-based frying pan over a high heat, add the beef slices, garlic, ginger and chillies and stir-fry until just cooked. Add the shoots or beansprouts, a good splash of soy sauce and sesame oil and the lime juice for the last 30 seconds of cooking. Tip the contents of the wok into a large bowl, including all the lovely juices. Put the wok back on the heat, drizzle in a splash more vegetable oil, then add all the vegetables. Stir-fry for 1 to 2 minutes, then add the cooked noodles and toss well over the heat. Divide the fried vegetables and noodles between 4 plates. Return the beef and juices to the wok and stir-fry until heated through. Add the coriander and toss until well mixed with the beef. Arrange on top of the noodles and garnish with a cos lettuce leaf.