How does olive oil act as a natural preservative?

Because of its rich flavor and high fat content, olive oil is the oil of choice for most oil-preserved foods; however, any cooking oil will do the job. Olive oil works by forming a barrier between any microorganisms and oxygen, which basically creates a death sentence for the little guys. Food preserved in oil and kept in a cool, dark place can last a long time.

Asked by Leni Davenport · Last updated 5 years ago · 1.4M views · SOURCE