Peel prawns if necessary and de-vein. mix sherry soya sauce sesame oil and Szechuan pepper together and add the prawns, marinade for at least an hour.
Heat wok; add half of the oil and stir fry the Garlic, Ginger and vegetables.
Place in warm oven. Drain Prawns adding the marinade into the stock . Add remainder of the oil to wok and quickly stir fry the Prawns for just a minute or two. add the chicken stock, soya sauces, sherry, Vinegar, sugar, Sesame Oil and cornflour Add the vegetables back in and quickly stir.
Serve immediately with fried rice or noodles of your choice.