Sour, rancid, or ammonia-like smell
Slimy or sticky surface
Gray, green, or brown discoloration beyond normal oxidation
Mold growth
Dry, tacky, or unusually mushy texture
Package is swollen, leaking, or damaged
Meat feels unusually soft or breaks apart easily
Strong off odor after opening the package
Expired use-by date combined with any of the above signs
Unusual taste after cooking or tasting should be avoided; discard instead