Step 1Place noodles in a large bowl. Cover with boiling water and leave to soak for 10–15 minutes.
Step 2Meanwhile, heat the olive oil in a large non-stick frying pan over medium-high heat. Cook mince, breaking up any large pieces with a wooden spoon, for 4–5 minutes, or until brown. Add the garlic, lemongrass, ginger and lime zest. Cook for 1 minute. Add lime juice, soy sauce and chilli; mix well.
Step 3Add the beans to pan; cook, stirring, for 1–2 minutes, or until just tender. Stir through peas (or edamame) and fish sauce; cook for 1 minute.
Step 4Remove pan from the heat, stir through coriander and mint. Place 2–3 lettuce leaves on each serving plate. Drain the noodles and cut into shorter lengths, if needed. Divide noodles between lettuce leaves and top with pork mixture. Serve with extra lime wedges, chilli and herbs.