https://topguidepro.com/best-cookie-jars/ The Mason cookie jar is made of ceramic and it has a retro style that looks beautiful sitting on the counter. It has embossing with the words “Fresh Homemade Cookies” and other decorative accents. The jar is dishwasher safe and it has an airtight lid that keeps food fresh. The jar is 7 inches high with a diameter of 5 inches.