Sour, sour-musty, or putrid odor
Slimy or sticky texture on the surface
Dull or tacky appearance instead of normal moist sheen
Color changes like gray, greenish, or unusual dark patches (beyond normal variation)
Excessive liquid or cloudy pooling in the package
Sticky film that doesn’t wash off easily
Package bloated or leaking (if vacuum-sealed or sealed)
Mold growth (any fuzzy or spotted appearance)
Unusually tacky consistency after washing
Taste that seems off or “off” flavor (do not taste if you suspect spoilage)
Off smell or texture after cooking (if it smells wrong when heated, discard)