Instructions

1. Cook the onion in the oil until soft. Stir in garlic, ginger and cumin, then add tomatoes and lentils.
2. Cook on a slow heat for 4 minutes. Stir in the stock and tomato puree, bring to the boil and then lower the heat and let simmer until the lentils are soft. This will take about 30 minutes.
3. Season to taste. Purée the soup until smooth, return to the pot and heat gently before serving.
4. Garnish with the yogurt and parsley on top.