Cold water lime pasteurisation is a method used to prepare substrates that have little to no supplementation. It’s ideal for processing straw and sugar cane mulch. Using nothing more than cold water and hydrated lime substrate can be pasteurised overnight.
This same method can be used for hardwood fuel pellets. Use a tied pillow case to allow for easy retrieval and drainage. It’s important to note that substrates containing soy hulls or high levels of supplementation are to be sterilised instead of pasteurised to avoid contamination.