Slash along the back of each crayfish, then wash and dry them. Mix together the flour, salt and pepper. Dredge the crayfish in the seasoned flour and then deep fry them in about 1" hot oil until golden. If using a wok do them in batches. Drain.
Heat 2 tbsps oil in a wok or frying pan. Cook the peppers and chilli together for 2-3 minutes. Add the rice wine or sherry and sweet and sour sauce. Season to taste with the sugar and pepper and bring to the boil.
Mix together the oil, cornflour and water and add to the sauce. Stir until thickened. Toss the crayfish back into the pan and heat through, stirring, for 1-2 minutes before serving.
• 450g (1lb) raw crayfish, shelled& deveine
• 55g (2oz) plain flour
• ¼ tsp salt
• black pepper
• oil for deep frying
• 2 red peppers, seeded and sliced
• 1 red chilli,seeded & finely sliced
• 1 tsp rice wine or dry sherry
• 8 fl oz sweet & sour sauce
• 1 tsp sugar
• 1 tsp sesame oil
• 1 tsp cornflour
•1 tbsp water