? The Freezer Penny Trick: A Simple Hack to Protect Your Food During Power Outages
Have you ever come home after a trip or a long day and noticed your digital clocks blinking? That telltale sign means the power went out—but it doesn't tell you how long it was off. And when it comes to your refrigerator and freezer, that's a pretty important detail.
When food thaws and then refreezes, it can become unsafe to eat, even if it looks okay. But how can you tell if that happened while you were away? Enter: the freezer penny trick—a low-tech but genius way to know whether your food stayed safely frozen during a power outage.
Freeze a small cup or container of water—plastic or styrofoam works great.
Once frozen solid, place a coin (like a penny) on top of the ice.
Leave the container in your freezer.
That's it!
If the power goes out and your freezer begins to thaw, the ice will melt—and the coin will sink. If the freezer refreezes later (which often happens before you return home), the coin will be stuck at the bottom of the ice.
If you return to find the penny on top? Your food likely remained frozen the whole time and should be safe to eat.
If the coin is at the bottom? You may want to toss those groceries and play it safe.
Food safety isn't just about what you see or smell. Even short-term warming of frozen foods can cause bacteria to grow—and when that food refreezes, it's easy to miss the warning signs. This simple penny-in-the-freezer trick gives you a reliable visual cue without needing high-tech gadgets.
Plus, it's especially handy if you're:
Traveling for vacation
Leaving your home unattended for days
Worried about storms or rolling blackouts
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