Keeping used duck fat - how long?

[Lottapianos]

Im using some duck fat to make duck confit - can I keep the used leftover fat for roast potatoes? How long would it keep in the fridge?

Thanks

Mine kept a month or two. Once stuff starts growing on the top or it smells revolting then it's time to chuck it. Just be sensible about it and you'll be fine.

Thanks Todays, that's what I was hoping