Briquetting uses compaction or densification to convert loose biomass materials such as agricultural residues and sawdust to high-density, low-moisture, high-energy solid fuels. Biomass refers to all organic matter derived from living or recently living organisms and can be plant- or animal-based, and from microorganisms and humans. During densification, biomass materials are compressed under high pressure to compact, equal-sized chunks known as briquettes and this can be achieved manually or mechanically. Processing biomass into briquettes allows the material to burn more consistently and evenly; it improves its energy density and makes it more suitable for transportation.