First finely chop the garlic, onion, pepper and carrot into small cubes.
In a saucepan ad the cooking oil and on medium heat sizzle the onion until it's transparent.
Ad the garlic, pepper and carrot and continue to sizzle for a few minutes.
Ad the tomato purée and give it a good stir.
Ad the can of tomatoes and let it simmer for a few minutes, put in the broth and ad water.
Ad the lentils let it cook for 6-10 minutes, after 6 minutes taste the lentils and remove the saucepan if they are almost done and let them finish on the after heat in the saucepan.
Ad the cumin.
Season with salt and pepper.