GoKawiilChefs say frying oil can be safely reused, not tossed after one use
Culinary instructor Melanie Underwood explains that leftover frying oil doesn't need to be thrown out after a single use, as long as it wasn't overheated to the point of smoking or used to fry something with an overpowering flavor like seafood. She recommends neutral, high-smoke-point oils such as canola, peanut or sunflower oil, and maintaining a frying temperature between 350 and 400 degrees Fahrenheit to keep the oil viable for repeated use.