Cashew Apple Anacardium occidentale
The Cashew Apple is actually not a true fruit but the pedicle or base of the cashew flower. The fruit is actually the cashew nut. The cashew tree comes from South America and the West Indies, but is know cultivated throughout the tropics.
The cashew Apple has a sour taste and is used in preserves and drinks in Brazil and the West Indies.
The fruit is a so called psuedo fruit (or "false fruit") since the true fruit is the cashew nut: that is first developed. The receptacle becomes fleshy and plump. It has a waxy yellow, red or orange skin. It is juicy, acid to subacid. In India, this juice is distilled into liquer (feni).
It is often not known that the cashew tree is related to poison ivy.