If Your Ham Has a Rainbow Sheen, Here’s What It Means

Is It Still Safe to Eat? The Truth Behind That Shiny Surface

You open the fridge, unwrap a few slices of leftover ham, and notice something strange — a shimmering rainbow sheen across the surface. It almost looks like oil on water or soap bubbles. You pause and ask the big question:

“Is this ham still safe to eat?”

Don’t worry — you’re not the only one who’s noticed this unusual effect. In fact, it’s a common phenomenon and usually not a sign of spoilage. So, what causes ham to appear iridescent, and when should you actually be concerned?

Let’s break it down.