Mold or fuzzy growth on the skin or cut surface
Slimy, wet, or sticky texture
Soft, mushy, or shriveled spots
Strong sour, rotten, or off smell
Dark discoloration that looks unusual or spreads
Visible signs of decay or rot
Taste that is bitter, sour, or otherwise unpleasant
Sprouting with severe drying, softness, or spoilage
Excessive wrinkling combined with loss of firmness
Any sign of insects or contamination