The raw material used to cultivate mushrooms is called mushroom compost and great care is taken by professionals to produce it in excellent quality. Bales of wheat straw are mixed with water, gypsum and other organic material and this substrate is allowed to heat up to temperatures of around 80˚C (that's hot, we know!).
After a few days, the compost has become an excellent, nutritious substrate for growing mushrooms. The compost is then pasteurised (so that all the bad stuff that might hinder the growth of the mushrooms are taken out) and spawned.
Operating in a sustainable manner and being environmentally friendly is central in the mushroom growing sector. Growing mushrooms relies almost exclusively on waste material from other sectors as straw is a by-product of grain farming.
Next, lets look at what happens when all the raw materials are filled in the growing room.