Reduce the number of words, making it concise yet still stating the valid points: When I prepared sawdust as a substrate for mushroom cultivation, I followed a common method that many mushroom growers use. Here are the steps I took to prepare the sawdust

To prepare sawdust for mushroom cultivation, I followed these steps:

**Select sawdust:** Use hardwood sawdust, as softwood can hinder growth.
   
**Dry sawdust:** Spread in a well-ventilated area until completely dry.
   
**Sterilize sawdust:** Eliminate harmful microorganisms using a sterilization method.
   
**Soak sawdust:** Submerge in water for 24-48 hours until damp but not saturated.
   
**Drain and cool:** Use a colander to remove excess water and let cool to room temperature.
   
**Mix with spawn:** Combine cooled sawdust with mushroom spawn in a clean container for even distribution.
   
**Pack and incubate:** Place mixture in sealable containers with holes for gas exchange, keeping them in a dark, controlled environment.
   
**Colonization:** Allow mycelium to colonize the sawdust over a few weeks to months, depending on the species.
   
**Trigger fruiting:** Create optimal conditions (light, temperature, humidity) for fruiting according to the mushroom species.