I have heard about coating eggs in an oil (don't remember what its called - starts with a C) and it can make them last for up to a year if kept in a coll dry place.. has anyone ever heard or done this? And if I was to cover them in the oil... do I want to keep the initial natural layer on the egg rather than washing it? I obviously don't want to wash the eggs to remove the layer... but if I also cover it on the oil will it out last the 7months I've heard and read about?