Authors:

Vitamin D from mushrooms is not only vegan and vegetarian friendly, but you can prepare your own by exposing mushrooms to the summer sun.

"Place Mushrooms in Sunlight to Get Your Vitamin D: Part One" by Paul Stamets, www.huffingtonpost.com. July 2, 2012.
Vitamin D from mushrooms is not only vegan and vegetarian friendly, but you can prepare your own by exposing mushrooms to the summer sun.