Heat the chilli oil, sweat the shallot cubes briefly, then add the carrot slices. Season with cinnamon and a little salt. Fry the tomato paste briefly (so that the acid goes out). Pour in the vegetable stock. Add the lentils and simmer for 20-30 minutes until the lentils are soft. Stir every now and then, add a little broth if necessary.
Add the orange juice and season with salt, pepper and cinnamon. Bring to the boil again, then puree with a hand blender. If you don`t like it so mushy, you can dilute the soup with broth as you like. Place a dollop of yogurt on the plate to serve.