From Encyclopedia of Natural Healing:
translated roughly from German…..
“Shaggy Ink, a fungus with us as well as in Asia occurs both. We will, however, he rarely ate only. He is one of the few fungi that also contain vitamin C. It also contains niacin , Riboflavin and thiamine. In the protein there are 20 amino acids, including all of the people’s vital. He is particularly rich in potassium and low in sodium (130:1) and contains magnesium , iron , calcium , manganese , zinc and copper.”