Clam Chowder with stalks

2 cups clams large (about 8 clams) 2 large potatoes -diced 2 medium onions diced 2 each sweet bell peppers chopped 2 Celery celery stalks finely chopped * 1[...]

12 tablespoons unsalted butter , divided 2 cups yellow onions , chopped (2 onions) 2 cups celery , medium-diced (4 stalks) 2 cups carrots , medium-diced (6[...]