Perfect chicken balti

Name: Perfect chicken balti
Cook time: 1 h
Total time: 1 h
Cuisine: Indian
Ingredients: 2 cloves of garlic; 1-2 fresh red chillies; 5 cm ginger; 2 onions; groundnut oil or vegetable oil; 1 cinnamon stick; 2 fresh bay leaves; 12 green cardamom pods; 6 skinless higher-welfare chicken thighs (500g); 1 teaspoon garam masala; 1 pinch of ground cloves; 1 heaped teaspoon ground cumin; 1 heaped teaspoon ground coriander; 4 ripe tomatoes; 100 g low-fat natural yoghurt plus extra to serve; ½ a bunch of fresh coriander