Sterilizing your substrate using a pressure canner 
50:55
Pressure Cookers & Sterilization for Mushroom Cultivation (Plus a Low-Tech Alternative)
7:20
How to correctly sterilise your substrate for growing mushrooms at home.
16:05
Pressure cookers for mushroom growing - Which ones to get and how to safely use them.
27:54
HOW TO MAKE LIQUID CULTURE FOR MUSHROOM GROWING, Vented Lid Jars from Start to Finish
5:13
Mushroom steam Sterilization Method , Cheap and easy
7:41
How to sterilize mushroom spawn bags in a 23q Presto
18:51
Presto 23qt. Pressure canner set up and test
7:46