From The Website:
McMagic Fast Food for Mushrooms
McMagic is a high-protein food source for mushrooms grown on wheat straw. While pasteurized wheat straw is a convenient growing medium for many mushrooms, it lacks the protein that healthy mushrooms need.

This place seems kind of pricy to me. It seemed to look like it had a sand base to it when I saw it. I'm going to wait until I actually SEE his results before I recommend it.
Peace,
Wildman

[This message has been edited by Wildman (edited July 13, 2000).]