Why Are My Canned Black Olives Slimy?

A. The most common name is Mother. This is harmless residue that forms on the olives when the vinegar in the brine mixes with oxygen (oxidation).

How do you know if canned black olives are bad?

How can you tell if opened olives are bad or spoiled? The best way is to smell and look at the olives: if the olives develop an off odor, flavor or appearance, or if mold appears, they should be discarded. Discard all olives from cans or bottles that are leaking, rusting, bulging or severely dented.

What is white stuff in can of black olives?

This is called the "mother" or "yeast spots." It's the result of the normal bacteria and fungi from where the olives are grown and brined. The olives are still safe to eat, they just have fermented a little bit.