How do I tell if my olive oil is bad rancid?

Olive oil tastes best when it is fresh. All olive oils, even the finest ones, will get rancid eventually. Rancid is basically spoiled — an oxidized fruit, like a banana that has turned black.

For more quick answers to your olive oil questions, ask Ollie — a bot developed by the Olive Oil Times Education Lab that uses artificial intelligence to help people learn more about olive oil.