Clean: Make sure to always wash your hands and surfaces with soap and warm water for 20 seconds before cooking and after handling raw meat or poultry during cooking. Separate: When taking food off the grill, use a clean platter. Don't put cooked food on the same platter that held raw meat or poultry. Cook: Always use a food thermometer to check the internal temperature of burgers, steaks, chicken, and foods containing meat or poultry. Chill: After a cookout, place leftovers in shallow containers and refrigerate or freeze immediately. Remember, when in doubt, throw it out!