Unlike other nut varieties that can be purchased unshelled, pistachios are often sold in the shell, leaving eaters up to their own devices to open the pieces to enjoy or use in recipes.

It's found in the plant itself and the brown oil inside a nut's shell. It can cause burns, itches, and blisters, which is why unprocessed cashews are considered dangerous to eat or touch.

Nth Wonder To get to the nuts (left), they first have to be double shelled, and then a final skin needs to be removed Mr Giannuzzi's firm sources its kenari from Alor Island, which is located some ...