Grills have been around in one form or another since fire was first discovered. By placing a mesh directly above the flames and the food on top, our early ancestors discovered that fire will heat food until it’s cooked, without unwanted burning or charring. This process is also known as barbecuing, which refers to applying heat to the surface of food from the top or the bottom until it is ready to eat. Today, grilled meat and veggies are most often cooked over coal or wood, on an open wire grid or a grilling pan. Gas, charcoal, and smoker grills are also wildly popular with modern grill aficionados.