It appears black and unremarkable on the outside. However, its vast internal surface area and porous structure make it unique and valuable in many areas. Biochar is produced from plant-based biomass, such as that generated in agriculture, horticulture, viticulture, and municipalities. At high temperatures and with limited oxygen, materials like wood, hedge clippings, tree trimmings, grass cuttings, and even grain husks are carbonized. This pyrolysis process can be applied in any garden, for example, using a soil pit, or for industrial use in large-scale plants. In addition to its material applications, which improve properties like soil quality or construction materials, biochar offers further benefits. Its production generates renewable energy in the form of heat, which can be used as process heat and additionally converted into electricity. This makes biochar production a contributor to decarbonization. Depending on its application, biochar also serves as a permanent carbon sink, as it removes carbon from the cycle that would otherwise be released through the decay or combustion of the biomass. Alternatively, biochar can replace fossil carbon-containing materials like lignite/coal or activated carbon, contributing to defossilization.