Who knew the Cashew is a seed that grows on a fruit called the Cashew Apple. (picture from HoboTraveler.com)
Unless you live in Brazil, India, SE Asia or Africa it’s likely that you’ve never seen a Cashew Apple. The Fruit is extremely Juicy and fragile and is usually only used as a drink, or made into liquor, or just given as feed to livestock.
The Cashew must be properly roasted to release the toxins it contains in it’s shell. That is why you never see cashews in the shell.