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?

:

A sour, ammonia-like, or otherwise unpleasant smell

A sticky or slimy surface texture

Dull gray, greenish, or patchy discoloration

Visible mold

If you notice any of these signs, discard the meat.

6. Smell, Texture, and Color Checks You Should Always Do

see continuation on next page6. Smell, Texture, and Color Checks You Should Always Do
To determine freshness:

Smell: Fresh pork has a mild scent. Sour or strong odors signal spoilage