Keeping Olive Oil and Other Oils Fresher Longer
Moving them off the kitchen counter is only the first step. Here's how to prolong the life of the oils in your kitchen.
Unopened: 1 year Open: 3 months
Do check the harvest date printed on the label of high-end oils to ensure the freshest bottle possible. (Some labels cite an expiration date, which producers typically calculate as 18 months from harvesting. We think unopened olive oil can go rancid 1 year after the harvest date.)
Do move olive oil from the countertop or windowsill to a dark pantry or cupboard. Strong sunlight will oxidize the chlorophyll in the oil, producing stale, harsh flavors.
Don't buy olive oil in bulk. Once opened, it has a very short shelf life.
Checking for Freshness
Heat a little olive oil in a skillet. If it smells rancid, throw out the bottle. (This test works for all vegetable oils.)
Here's a quick guide to storing open bottles of oil in your kitchen. For optimal flavor, replace these oils 6 months after opening.
Store in Pantry
Store in Fridge