1. In a large saucepan, heat oil over medium heat. Add onion, garlic, ginger, cumin and coriander; cook, stirring, for 3 minutes or until softened.
2. Add lentils, tomatoes and stock. Bring to a boil; reduce heat, cover and simmer for 35 minutes or until lentils are tender. Stir in coriander; season with salt and pepper to taste.`