Adapted from Rebecca Katz's One Bite at a Time. This broth can be enjoyed hot, cold or room temperature, and is a wonderful base for soups, chili and stews. I've made this numerous times for friends undergoing chemotherapy and radiation treatment, and it has always been well received.
Scrub and rinse carrots, potatoes, sweet potatoes and yam well. Rinse the remaining vegetables well, including the kombu. Place all the ingredients, except the salt, in a large 6-8 quart stockpot. Fill with water to 2 inches below the rim of the pot. Cover and bring to a boil; reduce to low and simmer, uncovered, for 2-3 hours. Simmer until the full richness of the vegetables can be tasted. Add salt and stir.
I used a variety of potatoes and sweet potatoes that I found at the farmer's market. The idea is to use a diverse selection of fresh vegetables.
If you're on a no-iodine diet, do not include kombu, as sea vegetables contain iodine.
To make Chicken Magic Mineral Broth, simply add 2 pounds of organic chicken bones; refrigerate and skim off any fat.
This broth is especially good for people undergoing chemotherapy as it provides nourishment even when their appetite is low.