Jeera chicken

Name: Jeera chicken
Cuisine: Asian, Indian
Ingredients: 2 tbsp cumin seeds; 2 tbsp sunflower oil; 2 red onions, thinly sliced; 25g fresh root ginger, peeled and grated; 40g green chillies, de-seeded and sliced; 2 tsp ground turmeric; 1 tsp sea salt; 8 bone-in skinless chicken thighs (or buy with skin on, pull off the skin and discard); 300-500g natural yoghurt, at room temperature; 1½ tbsp garam masala; juice of ½ lemon; 15g fresh coriander, chopped