Lentil Soup with balsamic

1 cup red lentil 2 tablespoons virgin olive oil 1 onion , finely chopped 1 -2 carrot , finely chopped 1 -2 celery rib , finely chipped 3 garlic cloves ,[...]

3 cups vegetable broth 3 cups water 2 cups brown lentils , picked over and rinsed 1 tablespoon olive oil 1 large onion , peeled and coarsely chopped 2 large[...]