I slow cooked a pork roast for 8 hours, but when I sliced it, I saw this weird shiny green and rainbow reflection on the meat fibers. It looks like gasoline on water. Did the meat go bad?

At first glance, this iridescent sheen may seem alarming—reminiscent of gasoline on water. Questions about the safety and edibility of the meat naturally arise. Is this a sign that the pork has gone bad, or is there a scientific explanation behind this phenomenon? Understanding the reasons behind this visual occurrence can help alleviate concerns and ensure that your meal is both safe and delicious.

1. What That Shiny Green, Rainbow Sheen on Pork Really Is