The cans of tuna have easy open pull tab can lids that may not be fully sealed and can at minimum leak or worse become contaminated with clostridium botulinum, or a potentially deadly type of food ...
One of the easiest ways we have seen is that of [GREENPOWERSCIENCE], who uses nothing more than a trash can lid, mylar film, and tape. You need a way to make a partial vacuum though. The idea is ...
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