Prepare vegetables, of your own choice, i.e. bok choy, bean sprouts, capsicum, onion, broccoli, asparagus, Chinese leaf, baby corn--a mixture is great. Add the chili, crushed, place to one side.
Blanche asparagus and broccoli for 2 minutes then add to the other vegetables with the garlic and ginger.
Toast Szechwan peppercorns in a small dry pan until fragrant, crush and add to the chicken with the five spice powder and enough oil to just coat. Marinade for half an hour,.
In a cup place the stock, Soya sauce, sesame oil, vinegar and sherry, mixing the corn flour with enough water to mix when adding to the sauce.
Heat wok and add half of the oil. Stir fry the vegetables and place in warm oven. Add remainder of the oil to wok and quickly stir fry the meat for just a minute or two; add the liquid and stir until it thickens.