Why People Put Coins in Freezers — And What It Really Does
Popularized online by Sheila Pulanco Russell, it requires only a cup, water, and a coin. Fill a cup with water, freeze it solid, then place a coin on top and return the cup to the freezer. If power goes out long enough for ice to melt, the coin will sink before refreezing. When you return, the coin’s position reveals what happened. On top means food likely stayed frozen; partway down or at the bottom indicates thawing, meaning perishable items may be unsafe and should be discarded.
This method removes guesswork, offering a clear visual indicator instead of relying on smell or texture, which can be misleading. While not a substitute for proper food safety practices or temperature monitoring, it’s a practical backup tool. Paired with regular freezer maintenance and safe handling, it gives peace of mind and reduces the risk of foodborne illness during unexpected power interruptions.
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