Initially, Sanders and KFC used hydrogenated vegetable oil for frying, but in the 1980s the company began to switch to cheaper oils such as palm or soybean.
起初，桑德斯与肯德基使用氢化植物油来炸鸡，但是，1980年代，公司开始转而使用廉价食用油，如棕櫚油或大豆油。