Pine nuts are key to a delicious pesto, but some people claim that they also sometimes leave behind a lingering metallic taste. Why? Over at Wired they're taking a look at the phenomenon of "pine mouth" and the neurochemistry of just how tastes can be transformed in our minds.

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AverageDrafter
AverageDrafter

Pistachio Pesto

Problem solved, Pistachio >>> Pine Nuts