Whisk the egg white with chillies, garlic, pepper and salt and marinate squid for at least 1 hour
Sift dry ingredients well to combine. Heat oil in wok to very hot. Just before frying, drain the squid and dust with the flour mixture, then shake in a sieve to get rid of excess flour.
Fry in batches until lightly golden. It should take 1 minute or less.