Sun, March 8, 2026 at 9:00 AM UTC
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A quality bottle of olive oil is a pantry staple. The smooth, peppery, robust condiment is called on frequently and fondly for vinaigrettes, pestos, pastas, vegetables, marinades, and more. When it comes to choosing the right olive oil for your kitchen, the towering variety of options can be overwhelming.
Grocery and boutique market shelves are lined with tin, plastic, and glass vessels wearing labels claiming to be cold-pressed, refined, extra virgin, or sourced from particular European regions.
Before blindly grabbing the most conveniently sized or priced bottle on the shelf, there are a few things to know.
Your Olive Oil Container Matters
When it comes to olive oil’s taste and nutritional quality, oxygen, heat and light are the enemy. Experts say it’s important to choose olive oil in dark glass bottles and to avoid plastic packaging altogether. Here’s Why:
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Though plastic bottles are cheaper and much less likely to break, they just don’t maintain the environment olive oil needs to thrive.
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Olive oil is sensitive to UV exposure and consistent exposure to light can cause oxidation, turning the oil flat and dull tasting. Light also breaks down the oil’s antioxidants.
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Over time, oxygen and heat seeps through semi-permeable plastic and the oil begins to degrade.
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When plastic bottles heat up, a chemical leaching can occur where the oil can absorb properties from the plastic container.
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Dark glass helps preserve olive oil’s flavor, nutrients and aroma—all key properties that enhance a dish’s taste.
How To Store Olive Oil
How and where you store your olive oil is just as important as how it’s bottled. A properly stored oil imparts a smooth consistency and antioxidant-rich golden hue.
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To minimize air exposure, always close the cap tightly and try not to leave your bottle uncapped while cooking. If you buy a large bottle, consider transferring some into a smaller dark glass bottle for daily use (less air space equals slower oxidation).
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Try and use your olive oil within a reasonable amount of time. Bottles are typically best within one to three months after opening. Unopened bottles should ideally be used within 12 to 18 months of harvest. Remember: Olive oil doesn’t improve with age—fresher is better.
Know When Your Olive Oil Has Gone Bad
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Rancid olive oil smells musty or stale, like wax crayons or old nuts.
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Olive oil that has gone bad tastes unpleasantly flat or bitter.
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If the oil appears cloudy or contains sediment, it’s time to toss it.
Read the original article on Allrecipes