The term FRYING MEDIUM refers to the type of FAT or OIL used for frying food. The four solutions to this crossword are LARD (4 letters), FAT (3 letters), OIL (3 letters), CORNOIL (7 letters) and DEEPFAT (7 letters). LARD is a type of animal FAT, usually from pigs, that is solid at room temperature and is often used in baking and frying. FAT is a general term for any type of fatty substance, including LARD, butter, and vegetable oils. OIL is a liquid FAT, such as vegetable OIL, that is used for cooking and frying. CORNOIL is a type of vegetable OIL made from corn kernels, which is often used for deep-frying. DEEPFAT is a type of FAT used for deep-frying, which can include LARD, vegetable OIL, or other types of FAT.