Whisk together all the ingredients for the Sichuan spicy sauce in a bowl, then set aside.
In another bowl, season the chicken with salt and pepper and then dust with cornflour. Mix to coat well, then set aside.
Heat a frying pan or wok over a high heat, add the rapeseed oil. Add the garlic, ginger and red chilli and toss for a few seconds to release their flavours, but don’t let them burn. Add the chicken and fry until they start to turn brown, add the sherry or shaoxing wine for 2 minutes or until the chicken is cooked through.
Add the cold water to create some steam. If using additional vegetables, add them now with another 1 tbsp. of cold water, this will help to cook the vegetables.
Pour in the sauce and fry until the vegetable are cooked to your liking and the sauce has thickened. Serve immediately with rice and enjoy….