Turn on a gas grill to medium or light a charcoal grill and let the coals burn until medium-hot and covered with white ash.
But not all health care providers agree that charcoal should be used outside of a medical setting.
Watercolors are strikingly identical and the charcoal works, done with color pencil, are deceptively perfect.
mid-14c., charcole, first element is either Old French charbon "charcoal," or, on the current theory, obsolete charren "to turn" (from Old English cerran) + cole "coal," thus, "to turn to coal."
charcoal char·coal (chär'kōl')
Carbon obtained by heating or burning organic material with restricted access of air.