The Freezer’s Unsuspected Trick: Why a Simple Part Can Save Your Food

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Your freezer seems to be working normally, but a past power outage could have compromised your products without leaving any visible signs. Learn how a strategically placed coin becomes a crucial indicator to avoid the health risks associated with refreezing perishable goods.

The foolproof cup and coin technology: a brilliant freezing test

This ingenious method, popularized by Sheila Pulanco Russell in the United States, is disconcertingly simple. The necessary equipment? Three basic items: a simple glass, tap water and a small coin.

The procedure to follow:

  1. Take a regular glass and fill it three-quarters full with water.
  2. Place it in the freezer until the water completely turns to ice.
  3. Carefully place a coin (a small value coin will do) onto the frozen surface.
  4. Immediately return the glass to your freezer.

The principle behind this tip

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