Many fanfictions mention stasis charms that are utilized for keeping food (mainly I think) fresh, however as far as I can tell this is not Canon and there is no mention of ways to keep food fresh in Canon (I don't have it handy to quote, but I think there are some descriptions of potion ingredients in Snape's classroom being kept in jars or something). Keeping food fresh is an issue humanity has tried to tackle since ancient years, and it seems logical that it'd be a problem that wizards...
Separate names with a comma.