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Ten Second Tip
We tried this in the PC Kitchen/Laboratory, and it works! Perishables that come home from the supermarket with you in plastic containers, such as cottage cheese and yogurt, should be stored in the fridge upside down once they are opened, for an amazingly prolonged shelf life. How does it work? The stuff plops to the top when placed upside down, creating a seal that keeps bacteria out longer than when you store it right side up. We couldn’t believe how long we kept a container of yogurt going–far past its throw-me-out date. (One caution: be careful to give your item a light slam on the table so the stuff plops back to the bottom before you open it.)
—the Editors, on February 5, 2010