The pfft! tells you that it’s fresh. Whether it’s a can of coffee or a jar of roasted peanuts, the sudden rush of air when you open a vacuum-packed container tells you that the contents inside should ...

There are many benefits to vacuum-packaged foods, but Kansas State University food scientist Karen Blakeslee said knowing food safety concerns is necessary for food establishments. “Removing oxygen ...

When exposed to air, oils and aromas in the coffee will become oxidized. This makes it go stale and taste bad. You can slow this process by freezing or vacuuming the coffee.