Why Deli Ham Sometimes Shows a Rainbow Shine — And What It Means

If you’ve ever opened a package of deli ham and noticed a rainbow-like shimmer on the slices, don’t panic. In most cases, it’s a normal optical effect—not a sign that the meat has spoiled.

Why Does It Happen?

The colorful sheen is called iridescence. It occurs because:

• The muscle fibers in the meat are arranged in a way that reflects light.
• Thin layers continue reading …
  

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