The purpose of the “spawn” is to increase the fungal biomass, previously present as a small mass of cells in a Petri dish or liquid culture, and to expand this mass to possibly several kilos of mushrooms. The seed is generally made up of cereal grains such as barley, wheat, rye, oats, rice, etc., already colonized from the fungus. Each colonized grain, mixed in the final substrate, becomes a point where the fungus will develop, colonizing completely the bag or jar containing the substrate in just few days. To…
GROWING MUSHROOMS: MAKING THE SPAWN
