Cashew

The cashew fruit is not actually a nut, but instead more of a drupe (a seed contained in a hard coating surrounded by flesh). This drupe forms first at the end of the inflating pedicel, which in turn forms the cashew apple.

Cashews are more expensive than peanuts because roasting, shelling and cleaning of the kernels is a delicate and laborious process and the liquor produced by the shells is highly corrosive.