"Quality fruits have oily yellowish appearance when the outer dark purple skin is removed. The edible portion is the unctuous mesocarp about 6 - 8mm thick that surrounds the hard 3 angular seed. The whole fruit is soaked 5 - 10 minutes in hot water to soften the mesocrap and eaten with sugar. The seed containing the whitish compressed cotyledon can also be eaten. It has a fine flavour, crunchy with rich ‘lemak’ taste.
Kembayau trees grow easily from seeds. There is a 50:50 chance of obtaining female trees. Normally male trees are removed. The presence of wild male trees is sufficient to produce pollen for female flowers".
http://www.brunet.bn/org/bsmehp/invest/agroindu/smecrop.htm#kembayau