The fruit of the cashew tree is a pseudocarp or false fruit,
known in Central America as a 'maranon'.
The true fruit is the kidney-shaped 'drupe' that grows below the apple.
When properly roasted to destroy the allergenic toxic resin within its
double shell, one single nut (seed) may then go into your can of Planters.
Imagine the orchard of trees required to grow a handful!