2 long red chillies, sliced
1 tbsp ground coriander
6 garlic cloves, peeled and sliced
4 large onions, peeled and sliced
500g/1lb 2oz spinach leaves (preferably not baby spinach), stalks removed, washed and drained
1 bay leaf
freshly ground black pepper
10 cardamom pods
录 cinnamon stick
1 tbsp cumin seeds
2 tsp mustard seeds
1 tsp flaked sea salt, plus extra to taste
5 tbsp sunflower oil
2 tbsp tomato pur茅e
2 tsp ground turmeric
900g/2lbs boneless mutton leg, cut into 4cm/1陆in pieces (You may need to start off with a 1.7kg piece of mutton on the bone.)