Marinate chicken with vinegar, soy sauce, salt and black pepper. Make batter with all the given ingredients. Dip chicken in batter and deep fry until golden. Keep aside.
Method for sauce:
Heat oil; add garlic with all the sauces and seasonings. Cook for 2 mins and add water. When boiling, thicken sauce with corn flour. Add into it capsicum and spring onion sliced. To assemble, put rice in a sizzler topped with chicken and sauce. Serve garnish with rice and mayonnaise sauce.