1.Heat ghee in large saucepan; cook onion, garlic and ginger, stirring, until onion softens. Add seeds, chilli and spices; cook, stirring, until fragrant.
2.Add lentils and peas to pan. Stir in undrained tomatoes, stock and the water; simmer, covered, stirring occasionally, about 1 hour or until lentils are tender.
3.Just before serving, add coconut cream; stir over low heat until curry is heated through.