Storms are coming, and that means power outages. And what's the worst part of a power outage? The lack of hot showers, obviously. But second on the list is not knowing if all that tasty stuff you've got stashed in your freezer is going to be edible once you've got a working stove again. This Spoiler Alert ($13) lets you know just how thoroughly thawed your half-full bags of green beans and pints of Ben & Jerry's got before the electricity came back on. Use it so that you won't have to celebrate the return to modern conveniences with a case of food poisoning.