Check for a rancid, bitter, or sour smell
Look for mold on the surface or around the lid
Notice any unusual color changes
Watch for a dry, hard, or excessively separated texture
Check for a slimy or sticky surface
Taste a tiny amount only if it looks and smells normal; spit it out if it tastes off, bitter, or stale
Discard if the jar is past its expiration or “best by” date and quality seems poor
Throw it out if the lid is swollen, damaged, or the seal was broken
Discard if it was stored improperly or left open for a long time
Toss it if you see insects, debris, or contamination