If possible, put the lentils in water for two hours.
Put them in a pot together with the vegetable broth.
Cut the carrots into thin slices, tomatoes in cubes and remove the small broccoli roses. Halve the leek in length and cut it into small pieces. Shredders the garlic.
Add all vegetables to the lentils in the stew together with the herbs and tomato paste. Pour on a gentle fire for about 1 hour. If desired, season with some black pepper.