Allowing mushroom vendors in markets can be more complicated than it seems to outsiders. Since many mushroom vendors forage their product (which in turn means markets cannot inspect their sites) markets have to be creative while they practice what they preach (producers only rules!) The growing practice in this article may address although it seems to increase the need for production of diapers!
“Oyster mushrooms, Pleurotus ostreatus, can devour 90 percent of a disposable diaper within two months, observed Alethia Vázquez-Morillas of the Autonomous Metropolitan University in Mexico City in the journal Waste Management. (1) What’s more, the mushrooms grown on diapers are edible. Vázquez-Morillas has dined upon them herself.”