Lentil Soup with butter

1 lb potato , peeled and cut into small cubes 10 ounces green lentils (not Puy) 6 garlic cloves , unskinned 1 large carrot , scraped and chopped 2 celery ribs[...]

1 tablespoon butter 1 tablespoon olive oil 1 lb Italian chicken sausage (bulk and spicy) 1/2 cup carrot , diced 1/2 cup onion , diced 1/4 cup celery , diced[...]

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 ,[...]