Clarified butter or ghee canned lasts a long time. As for fat we always have fresh pig lard we render and make soap,suet, grease for cooking.
The favorite butter alternative here is bacon fat from frying with some soya sauce, Worcester sauce and fresh scallion on bread.. Yeah heart surgeons night mare. Average day is 7 k in calories burned just working farm.
All oils go rancid best controls are low o2 and cool temperatures with no light.