Claim: Placing a coin on top of a frozen glass of water in your freezer can help you tell if your freezer experienced a significant loss of power in your absence.
Fact-check: FACT CHECK: Does a Coin in a Cup of Ice Accurately Tell You If Your Freezer Lost Power?
Verdict: mostly false
Organisation: Snopes
Author: Alex Kasprak
Date published: 2017-10-19T10:26:00