I believe the "Not for ReUse" means the container it comes in shouldn't be reused for other things. Probably cause some folks are extremely alergic to even very small amounts of peanut products. Wouldn't worry about it, but don't put it back when it's hot. If you get a siphon and filter, should work great for multiple uses until it starts to turn as the others have indicated. Watch your cooking temp too, as running at too high a temp. will make it break down faster.