Lemongrass Beef, Noodle, and Peanut Salad

Ingredients

• 200 grams bean thread noodles
• 2 tablespoons lime juice
• 1 tablespoon soy sauce
• 1 tablespoon fish sauce
• 1 teaspoon brown sugar
• 500 grams lean rump steak, trimmed, thinly sliced
• 1 stick lemongrass, white part only, finely chopped
• 1 long red chilli, seeded, finely chopped
• 1 bunch choy sum, trimmed, stalks halved and leaves shredded
• 2 tablespoons water
• 2 tablespoons chopped, unsalted peanuts, to serve
• lime wedges, to serve