- The Seasoned Cast Iron Care Kit has all the essentials you need to use and care for your cast iron cookware. Our seasoning spray is made of 100% canola oil. The polycarbonate Pan Scraper won�t collect food particles, and features an assortment of angles to easily clean your cookware. The Silicone Handle Holder protects up to 500� F. The Scrub Brush features stiff bristles to easily clean and preserve your cookware�s finish.