To prepare sawdust for mushroom cultivation, I selected hardwood sawdust, avoiding softwood which can impede growth. I dried the sawdust thoroughly in a ventilated area, then sterilized it to eliminate harmful microorganisms.
Next, I soaked the sawdust in water for 24 to 48 hours to achieve dampness without saturation, then drained excess water and cooled it.
I mixed the cooled sawdust with mushroom spawn in a clean container for even