Bake unpeeled garlic into owen or microwave untill tender, peel it and mash it with a fork into a pan.
Add oil, finely diced onion, carrot, celery and tomato and cook for 10 minutes on slow fire.
Add salt if broth is not salted.
Pour lentils and cover with liquid.
Cook with a lid on for about 1/2 hour, keep an eye on it and add a little water if needed.
Turn off the fire and add spices, lemon juice and parsley as much as you like.
Mix well and serve.