1Marinate the chicken with vinegar, yogurt, ginger-garlic paste, powdered spices, cumin powder, kasoori methi, corn flour, and salt. Mix well and set aside for 30 minutes.
2Prepare the onion-tomato mix by combining sliced onions, tomatoes, green chilies, garlic, powdered spices, cumin seeds, kasoori methi, vinegar, and salt. Massage well and marinate for at least 1 hour.
3Heat mustard oil in a kadai until it smokes. Add marinated chicken and fry until crispy and golden brown.
4Remove fried chicken, reserving 20% of the oil in the kadai.
5Add marinated onion-tomato mix and cook on high flame until oil separates and onions are crunchy.
6Add fried chicken, toss together, and garnish with fresh coriander.