Biochar 101 January 01, 2017 Filed in: Biochar |Carbon |Climate Change written by: Gavin Heron Earth Probiotic is now manufacturing the Hookway Biochar Retort in South Africa. This retort can be used on a small to medium scale for on-site biochar manufacturing. Read More... Tags: Hookway Retort,Sustainability,Biochar,Sequestration