With the help of, chipper Shredder you can easily turn the leftovers into briquets. Here are five reasons why we use briquettes. They are produced by compressing biomass residues like sawdust, charcoal dust, and other wood leftovers or agricultural wastes into a solid unit that is used as firewood or charcoal. A binding substance such as clay, soil, or starch is added if the base materials do not hold together well.