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josie's avatar

What makes the cut surface of sliced deli meat occasionally look iridescent?

Asked by josie (30934points) October 29th, 2013

I sometimes see this where people put out “cold cuts“for sandwiches.
I definitely saw it on the roast beef (?) at Subway the other day.
What causes that?

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3 Answers

thorninmud's avatar

Removed because ol’ TommyG gave the true answer below.

Pachy's avatar

Thanks for the link, @tom_g. I always wondered about that myself.

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