Soft, mushy, or shriveled texture
Strong sour, rotten, or musty smell
Mold growth on the skin or inside
Green skin or green flesh
Dark spots, black spots, or extensive bruising
Sprouting with deep wrinkles or lots of sprouts
Wet, slimy, or leaking areas
Bitter taste after cooking
Hollow, dry, or severely dehydrated interior
Large areas of discoloration or decay