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Coffee Bean Vacuum Savers

These storage containers promises to help coffee beans stay fresher longer, but is it any more effective than a zipper-lock storage bag?

What We Learned

We tested three models (two with manual vacuum pumps and one battery powered), placing fresh-roasted whole coffee beans in each container and leaving them sealed for a week. While manual pumps initially created a tight vacuum, by the end of the week, their seals had broken, allowing moisture to condense on the beans, leaving them oily and odorless. The battery-operated product maint...