Put Szechuan and black peppercorns in a hot dry frying pan (skillet) together with chile flakes and salt and heat until the aromas are released. Crush coarsely with a pestle and mortar. Mix with the flours and toss in the squid. Heat the oil in the frying pan to 180*c Shake excess flour mixture off the squid and fry squid in small batches, Drain thoroughly before serving with chilli dipping sauce