1/2 kg (1 lb) Pork fillet (tenderloin), thinly sliced then shredded
4 Tbs Soy sauce
2 tsp Cornflour (cornstarch), blended with 2 Tbs water
5 Tbs Vegetable oil
2 Tbs Dried salted black beans, soaked in cold water for 15 minutes, drained and chopped
2 Small dried chillis, finely chopped
2 Garlic cloves, crushed
4 Chinese dried mushrooms, soaked in cold water for 20 minutes, drained and finely chopped
1 Leek, white part only, finely chopped
1 Tbs 'Wood ear' fungi
piece Fresh root ginger, peeled 2 1/2 cm (1 in) and finely chopped
75 g (3 oz) Canned bamboo shoot, drained and chopped
2 tsp Sesame oil
1 1/2 Tbs Wine vinegar
2 Tbs Rice wine or dry sherry
1 1/2 tsp Sugar