Direct and Indirect cooking
There are two methods to grill food over a gas, wood, charcoal, or infrared - direct or indirect cooking. Using the direct heat method, the food item is placed directly over the flame or coals. This method exposes the food item to very hot temperatures, often in excess of 260C (500F) or 480C (900F) for infrared grills. This is the fastest way to cook food items on a grill. The food items are cooked by the flames and radiant heat coming from the heat source of the grill. In the US, the direct heat method is often used for grilling steaks, hamburgers, hot dogs, sausage, pork chops, corn on the cob, skewers, etc. The food items must be carefully monitored so as to not burn them.
Using indirect heat, you place the food item so that it is not directly over flames or coals. This is done by having the fire or coals on only one section of the grill and placing the food item on a part of the cooking grill opposite the flames or coals - for example, having the burners going on the right side of a gas grill but off on the left side or placing the coals on the right side of the grill and no coals on the left side. In a charcoal grill, when indirect grilling it is best to place a foil pan of water under the food to keep it from drying out. Using the indirect grilling method is best for large cuts of meat or bone-in poultry. It allows the food to cook all the way through without burning or charring on the outside of the meat.