Magical Mineral Broth

Name: Magical Mineral Broth
Ingredients: 6 unpeeled carrots, cut into large chunks; 2 yellow onions, cut into quarters; 1 leek, white and green parts, cut into large chunks; 1 bunch celery, including the heart, cut into large chunks; 4 unpeeled red potatoes, quartered; 2 unpeeled Japanese sweet potatoes, quartered (** or standard sweet potatoes); 1 unpeeled garnet yam, quartered; 5 unpeeled cloves garlic, halved; 1/2 bunch fresh flat-leaf parsley, cut into large chunks; 2 8-inch strip of kombu; 12 black peppercorns; 4 whole allspice (** or juniper berries); 3 bay leaves; 8 quarts cold, filtered water (minimum); 1 teaspoon kosher salt