1. Cook the onion, chili peppers, garlic and ginger for 5 minutes in 2 tbsp oil. Add the spices and cook for 2 minutes. Add the chicken pieces, season and cook for 5-7 minutes until they start to colour a little. Add the tomatoes, chicken stock cube and a splash of water. Bring to a simmer, then cover for 20 minutes. Add the spinach and cook for another 10 minutes.