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teej
on Aug 10, 2020
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How long does a freezer stay frozen when the power...
I always heard this as an upright cup of frozen water with a penny on top. If you come home and the penny is inside the ice you know the freezer went out.
thaumasiotes
on Aug 10, 2020
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I think it bears mentioning here that you need to choose a cup that can survive the expansion of its contents. Or in other words, not a glass cup.
lxmorj
on Aug 10, 2020
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That is a much cleaner method
miked85
on Aug 10, 2020
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Seems a bit easier than covering your freezer in red food coloring
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