Choose your answer before opening the explanation. This is a learning exercise, not a competency assessment.
Steaming at 60 to 65 degrees for 6 to 8 hours is DMR guidance for:
- Casing soil
- Compost pasteurisation
- Spawn bottles
- Room walls
See the answer and why
Casing soil Compost is held at 58 to 59 degrees instead.

