Charcoal and propane are two popular fuels used for grilling. Charcoal is made from carbonized wood and provides a smoky flavor to food. It requires a longer time to heat up and can be more challenging to control the temperature, but many grill enthusiasts prefer its taste. Propane, on the other hand, is a gas that burns cleanly and heats up quickly. It allows for precise temperature control, making it easier to cook food evenly. While it lacks the smoky flavor of charcoal, propane grills are often more convenient for quick meals and outdoor cooking.