ross johnson wrote:Biochar is similar to charcoal but its different. What it is is carbonized organic matter. If you have a heat source and put something on it in the presence of oxygen then the materiel will catch fire. If you put materiel in a heat source but have it cut off from oxygen, the materiel will smolder and char. Many of the compounds contained in the materiel, will not burn off so the biochar will be a little richer then charcoal.