Butter Chicken Recipe

Ingredients 500g skinless boneless chicken thighs For the marinade 1/2-1 lemon, (to taste) juiced 2 tsp ground cumin 2 tsp paprika 1-2 tsp chilli powder 200g natural yogurt For the curry 2 tbsp vegetable oil 1 large onion, chopped 3 garlic cloves, crushed 1 green chilli, deseeded and finely chopped (optional) thumb-sized piece ginger, grated 1 tsp garam masala 2 tsp ground fenugreek 3 tbsp tomato purée 300ml chicken stock 50g flaked almonds, toasted