Fry: Lightly coat with cornflour and shallow fry until golden. Set aside.
Stir-fry base: In a pan, sauté garlic, ginger, green chilies, onions, and capsicum on high flame for 2-3 mins.
Sauce: Add soy sauce, chili sauce, ketchup, vinegar, salt, and pepper. Mix well.
Combine: Add fried chaap and toss. Pour cornflour slurry and mix until sauce thickens and coats well.
Garnish: Spring onions optional.