Did you know olive oil can go off? In fact, some experts say the best-quality kind should be used within months of purchase.

And much to my horror, I recently learned that the worst place to store the stuff is beside the hob, where it’s exposed to lots of heat and light.

Still, there’s been some good news about the cooking staple recently. One of the world’s largest producers of the stuff said last year that prices are set to lower by “half.”

And now, it seems that the health benefits associated with extra-virgin olive oil could be found in the tree’s leaves.

How can olive tree........

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