A rolling information display apparatus configured to rotate on the rolling surfaces of a roller grill is provided. The apparatus includes a tubular shaped body configured to roll in contact with the rolling surfaces of a roller grill. The apparatus further includes a calibrated cook timer, a temperature monitor, a temperature indicator, and an information medium removably positioned on the tubular shaped body. The calibrated cook timer includes a printed circuit board that is calibrated to rise in temperature in a similar manner to a food item that is cooked on said roller grill. The apparatus is used to display product information, to monitor the temperature of food items in close proximity to the apparatus, and to indicate when the food item is no longer suitable for consumption and sale.