Mix the yoghurt, garlic, ginger, green chillies, salt, half the coriander leaves and 1 ,1/2 tbsp cumin seeds
Marinate the chicken in this paste for at least two hours, or overnight, if possible
Remove the chicken pieces and quick fry in oil. Place the fried chicken in an oven-proof dish (see note 8 below)
Lightly try the remaining cumin seeds in the same oil. Add the chopped onions and fry for a few minutes
Add the yoghurt marinade and cook over low heat for about 10 minutes
Pour the gravy over the chicken and cook in an oven at 180°C (Gas Mark 4 or 350°F) for about 15 minutes or until the chicken is tender
Garnish with the remaining chopped coriander leaves
Alternatively, the chicken can be fried slowly until cooked, and served Immediately with the gravy