Abstract: A disposable pan, pot, or kettle liner system for deep-frying foods and includes a disposable pot liner and a disposable strainer fitting into the pot liner made of thin aluminum, aluminum alloy or other metal material having a stiffness adequate to be free-standing upon filling with cooking oil and heating to cooking temperatures while being sufficiently inexpensive to be disposable after use. The strainer is made of similar material and fits within the liner, holding foods to be cooked, and has a circular, flange-like upper rim extending upward, beyond the rim of the liner, to serve as a handle for lifting and straining the cooked food from the liner. The inventive disposable system is designed to be used within a non-disposable pot or kettle, but is freestanding. The system may also be used as a stand-alone unit directly on a heating surface such as a stove heating element.