Use an oven-safe meat thermometer when cooking large pieces of meat, poultry and game to determine when cooked thoroughly. The thermometer should be inserted into the thickest part of the meat. For accurate temperature reading, the tip of the thermometer should not touch fat layers, bone or gristle, or if using the rotisserie, the spit rod. The chart below will provide you with approximate temperatures for the degree of doneness for the different kinds of meats.