Szechuan Chilli Chicken is a spicy and tangy dish that is a favorite in Szechuan cuisine. The chicken is marinated in a mixture of soy sauce, vinegar, and Szechuan peppercorns, and then stir-fried with onions, bell peppers, and dried red chilies. The dish is known for its bold flavors and numbing sensation from the peppercorns. Serve it with steamed rice or noodles.