Ingredients
Method
1.Heat half the oil in wok; stir-fry beef, in batches, until browned. Remove from wok.
2.Heat remaining oil in wok; stir-fry onion, capsicum and choy sum stalks until stalks are tender. Add choy sum leaves; stir-fry until wilted.
3.Return beef to wok with sauces, chestnuts and the water; stir-fry until hot, season to taste. Serve sprinkled with nuts.
Spicy black bean sauce is available from Asian grocery stores and the Asian section of larger supermarkets. You can use a milder black bean sauce, if you prefer.
Note
