Select shortening best suited for desired food quality, and filter the shortening frequently. The fryer must have an accurate thermostat to keep shortening at a pre-set temperature. A built-in cold zone further prolongs shortening life. Shortening Use, Selection and Filtering Proper shortening insures that food cooks efficiently and tastes good, but if shortening is used too long it smokes and becomes thick and foamy. Food fried in old shortening is greasy and limp.
Energy saving is another benefit of clean, clear, fresh shortening.
Carbon and gum deposits on the sides of the fry pot speed up shortening breakdown. A clean fry pot, without carbonized deposits, transfers heat more efficiently. To increase shortening life, improve the quality and taste of the end product, and to save energy the operator should remove shortening by-products by filtering the shortening frequently. Add additional fresh shortening as needed. A good quality shortening has a long fry life and a high smoke point.