pinch of dried red chilli, thinly sliced
10 fresh curry leaves
2 garlic cloves, peeled and kept whole
1 small red onion, thinly sliced
250ml/9fl oz coconut milk
200g/7oz red lentils
1 tsp black mustard seeds
1 tbsp oil
salt, to taste
陆 tsp turmeric
25g/1oz butter