Yob
Hop to it
Malt extract is just basically sugar stuff hermetically sealed in a can. I seriously doubt it can go off. Full points to those individuals talking from experience. I respect peoples choice not to use it. I'd use it, and half price cans sound like a bargain.
Oh how you and your :icon_vomit: advice have been missed.
Stale out of date cans are well documented, even the op now notes strange things are afoot..
do your research H2B