Costco's Kirkland Signature organic extra virgin olive oil stands out for its rich quality and endorsement by chef Samin Nosrat. Despite its accolades, the use of plastic packaging raises significant health concerns; experts warn of the dangers of storing olive oil in plastic, which can lead to microplastic contamination in the oil. Additionally, the shelf life of olive oil in plastic is limited, urging consumers to be mindful of purchase timing and storage conditions. The recommendation to buy small quantities of olive oil helps ensure freshness and mitigates health risks associated with degraded oil.
However, the downside to Costco's Kirkland Signature brand olive oil is its plastic packaging. Experts argue that you should never store olive oil in plastic bottles.
After a period of time in plastic, the oil will corrode the container, which will then leach back into the olive oil, possibly ingesting microplastics.
Studies indicate that microplastics present dangers to the health of many internal organs, making it essential to limit plastic-packaged products.
Buying olive oil in small quantities is a wise choice, ensuring the oil remains fresh and flavorful before its negative qualities set in.
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