Charring's a chemical process of incomplete combustion of a solid when subjected to high heat. The resulting residue matter's called Char. Charring can be either a deliberate and controlled reaction used in manufacturing or it may be the result of naturally-occurring processes. By the action of heat, charring removes hydrogen and oxygen from the solid, so that the remaining char's composed primarily of carbon. It often occurs to biological tissue (living or dead) and organic compounds like wood… (More on Charring)