Vegetable Soup with mushroom

3 cups chicken stock 3 cups beef stock 3 carrots , chopped 1 small onion , chopped 4 bay leaves 1 cup mushroom , chopped 2 stalks celery , chopped 3 cups[...]

1 tablespoon extra virgin olive oil 1 large white onion, coarsley chopped 3 stalks celery , coarsley chopped 8 garlic cloves , minced 2 lbs boneless skinless[...]