Pour a small amount into a glass and swirl it gently. Best Practices for Storage.
Visually Assessing Olive Oil Freshness and Signs of Spoilage
Olive oil is at its peak quality for approximately 18 to 24 months after harvest. Fresh olive oil should smell vibrant, grassy, peppery, or fruity, depending on the variety.
Furthermore, while sediment at the bottom of a bottle is often just natural olive solids, a thick, sludge-like buildup clinging to the sides is a visual red flag that the oil is far past its prime. High-quality olive oil should deliver a pleasant peppery bite at the back of the throat and a fruity character on the tongue.
Visually Inspecting Olive Oil Freshness and Quality
Assuming you stored the oil properly in a cool, dark place, you can generally assume it is still within its optimal flavor window if it is less than a year old. If the aroma is sharp, reminiscent of old paint, crayons, or stale nuts, you are likely dealing with rancid oil.
More About How to tell if olive oil is bad
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