Start by heating the oil and frying together the onion, garlic, chilli and ginger for 2-3 minutes. Add in the spices and cook for 1 minute. Add in the lentils, coconut milk, polpa, salt and ½ glass of water. Bring to the boil and simmer for 20 minutes to cook the lentils. When ready, check if any more water is needed and stir in the chickpeas to heat through. To serve, stir in the fresh chopped coriander and serve with the cooked basmati rice and lime wedges.