According to Paul Hope, Home Editor at Consumer Reports and a classically trained chef, the key to holiday food prep is ...

Keeping your food out of the "danger zone" is key. You cooked, you cleaned, you ate, and now you’re ready to put it all away.

You can just wash them. It also monitors the temperature of your fridge so, if you're making your food too cold, it'll advise you to turn it down a bit. The big question, then, is does it work?