For garlicky haricot beans with sage, replace the lentils with 225 g haricot beans. Soak the beans in water for 6 hours, then rinse and drain. Place the beans in a large saucepan and cover them with plenty of water. Bring to the boil, then reduce the heat and simmer for about 30 minutes until tender. Drain thoroughly. Follow the recipe as for Garlicky green lentils with carrots , adding the drained beans to the tagine or saucepan with the onion, garlic, coriander seeds, sugar and dried sage leaves. Omit the carrots and stir in the tomato purée. Pour in enough water to just cover the beans, cover and cook gently for about 15 minutes. Season to taste with salt and pepper, then garnish with the fresh sage leaves. Serve as an accompaniment to meat and poultry tagines.