Charcoal is a lightweight black carbon residue produced by heating wood or other organic materials in the absence of oxygen. It is commonly used as a fuel for grilling and barbecuing due to its ability to burn at high temperatures with minimal smoke. Charcoal is also valued for its use in various industrial processes, including metal production and water purification. In the art world, charcoal is a popular medium for drawing, known for its rich, deep blacks and versatility. Artists often use charcoal sticks or pencils to create expressive sketches and detailed illustrations, making it a favored choice for both beginners and professionals alike.