Soy Hull is a main ingredient in the Matsters hard wood oak sawdust substrate commonly used for growing beautiful flushes of Oyster and other Gourmet Mushrooms. 
 
Dry Matter
89 %
Protein
12.4 %
Oil
2.4 %
Fibre
35 %
Ash
4.5 %
 
To make a mix with roughly 63% moisture content, please use the following recipie.
This method will also pasteurise the ingredients for use with oyster mushroom spawn. 
 
Wrap a 10-20L bucket in a thick blanket and add the following ingredients.
 
1kg Oak Hardwood Sawdust. 
1kg Soy Hull.
2L boiling water.
 
Place a lid on the bucket and leave for 24 hours. 
When cool, you may mix the ingredients well and use straight away.