Spiced lentil soup

Preparation

Preparation time: 15 min.
Put the onions, garlic, tomatoes, turmeric, cardamom pods, cinnamon stick, lentils, and water in a pan and bring to a boil.
Lower the heat, cover the pan, and simmer gently for 20 min. until the lentils are soft.
Remove the cardamom pods and cinnamon stick and blend the mixture in a blender.
Press the soup through a sieve and transfer it to a clean pan.
Reserve a little coconut milk for garnish. Pour the rest into the pan together with the lime juice.
Heat the soup without bringing it to a boil.
Garnish with the remaining coconut milk and the cumin seeds.