The first step is to rinse your lentils until the water is clear. Reserve.

In a large pot, heat over medium heat and add the oil. Saute the onion, carrots, potatoes and celery for 5 minutes. Add the garlic, mix and cook for another minute. Add the cumin, oregano, vinegar, lentils and tomato paste. Stir and cook for a few minutes then add the broth. Bring to a boil and simmer for 15 minutes.

At this stage add the green beans, spinach and bay leave and continue simmer for another 15 minutes or until lentils are cooked. Squirt some fresh lemon juice and stir before serving.