Beef stir-fry

INGREDIENTS

• 450g/1lb lean beef
• 2 tsp light soy sauce
• 1 tsp rice wine or dry sherry
• 1 tsp cornflour
• 2 tbsp groundnut oil
• 225g/8oz onion
• 3 tbsp water
• 2 tbsp oyster sauce
• small handful fresh mint
• 175g/6oz bean thread noodles
• 1 tbsp groundnut oil
• 2 tbsp black beans
• 3 tbsp spring onions
• 2 tbsp garlic
• 1 tbsp ginger
• 110g/4oz carrots
• 110g/4oz bean curd, finely chopped
• 225g/8oz Chinese flowering cabbage or pak choi
• 250ml/9fl oz water
• 2 tbsp Shaoxing rice wine or dry sherry
• 1½ tbsp chilli
• 1 tbsp whole yellow bean sauce, from a jar
• 2 tbsp light soy sauce
• 2 tsp dark soy sauce
• ½ tsp salt
• ½ tsp freshly ground black pepper
• 2 tsp sesame oil
• 2 tsp spring onions