An improved substrate for mushrooms that is essentially cellulose-free comprising a major portion of grain and minor portions of nutritional supplements. The grain is partially sterilized by boiling in order to kill bacteria, cooled in order to induce germination of the heat resistant spores, and steam sterilized before the germinated spores have matured sufficiently to create new spores. The substate can be used to grow fungi, including mushrooms, especially shiitake.

Uma carcaça melhorada para cogumelos que seja essencialmente celulose-livre compreendendo uma parcela principal da grão e parcelas menores de suplementos nutritivos. A grão sterilized parcialmente fervendo a fim matar as bactérias, de refrigeração a fim induzir o germination dos spores resistentes ao calor, e do vapor sterilized antes que os spores germinated se amadureçam suficientemente para criar os spores novos. O substate pode ser usado crescer fungos, including cogumelos, especial shiitake.