The fruit of Monstera deliciosa is up to 25 cm (10 in) long and 3–5 cm (1.2–2.0 in) diameter, and it looks like a green ear of maize covered with hexagonal scales. As the fruit ripens, these scales or platelets fall off the fruit, releasing a strong and sweet scent.
To ripen the fruit, set it inside a jar or glass and cover it with a brown bag. In time, the green hexagonal scales that make up the outer skin will slowly fall off from one end to another. You can nudge the scales off gently with a finger, but should stop if you find yourself using force.
Even when ripe, Monstera deliciosa still contains small amounts of oxalic acid and should be avoided by those who are sensitive to it. You may also notice some black specks in the fruit. These are edible, but can irritate the mouth. They can be picked out when consuming the fruit or skimmed off the top while it’s being cooked to make jam.
Custard Apples Grown by Brian Keating in rich but fragile volcanic soils at Duranbah. Brian...