Teflon is a substance that was discovered by accident. A DuPont worker that was researching a new refrigerating method accidentally discovered the substance when he noticed that the chemicals he combined formed a slippery yet strong substance on the inside of a bottle. Ceramic, on the other hand, was discovered when humans mixed clay and water together circa 10,000 B.C.E. Simply put, ceramic is the more natural choice when it comes to cooking food.