Easy Lentil Soup

reduced-sodium beef broth

dried lentils, picked over, rinsed & drained

large carrots, peeled and finely chopped

large onion, peeled and finely chopped

large celery stalks, finely chopped

bay leaves

diced tomatoes, with juice

red wine vinegar

freshly ground black pepper

to 2 cups hot water

chopped chives for garnish, optional