the meat’s structure rather than a sign of spoilage.
Here’s what’s really happening.
The Rainbow Effect Is a Natural Optical Illusion
Believe it or not, that colorful shine has nothing to do with bacteria, preservatives, or artificial additives.
Instead, it’s caused by the way light interacts with the meat’s microscopic structure.
Meat contains naturally occurring proteins, fats, and iron-rich compounds. When the meat is sliced very thinly—especially across the muscle fibers—the cut surface can act much like a prism.
As light hits the surface, it bends, scatters, and reflects at
