What do passion fruits look like?

The egg-shaped passion fruits have a tough leathery, sometimes wrinkled, skin, that is usually purple or red although there is a yellow variety available. Filling the central cavity is a yellowish aromatic pulp, surrounding numerous hard black seeds attached to small peg-like outgrowths on the fruit wall. This pulp, which is made up of juicy outgrowths from the seeds (arils), is rich in vitamin A and contains appreciable quantities of vitamins B1 and C. Both the seeds and the pulp are edible. The fruits are usually eaten raw and are popular in fresh fruit salads. Many of the yellow-skinned passion fruits are grown for juice production.
Generally the purple varieties of passion fruit are grown in subtropical areas whilst the yellow varieties and the giant granadilla need hot moist tropical conditions. In the major producing countries which include Brazil, Kenya, Australia and Hawaii, passion fruit are grown on plantations. Under these conditions each vine will produce around 100 fruits per year. Purple varieties are picked by hand from the vines whereas the yellow-skinned varieties are allowed to fall to the ground before being collected.
The giant granadilla is considerably larger than the passion fruit, weighing up to 5 kg. Just inside the skin of the yellow fruit is a layer of juicy white flesh which is edible but rather insipid in flavour. The central cavity is filled with numerous seeds surrounded by translucent juicy arils. This fruit is also generally eaten raw.