My first experience with this fruit the other week was with one that was over-ripe, sad to say; you can see the rind is very dark, where it would be greener when less ripe. This one came from Brazil, the ones I've seen that come from Thailand, called noi-na, are much smaller with a green and grey rind. Each segment of the fruit has an individual largish seed, you suck the flesh from it and spit out the seed. The flavour is kind of different, this one was over-ripe, so perhaps too "sugary", I can see why it has been described as tasting like custard (and is known as a Custard Apple in some places). I'm interested in trying it again, I would say, perhaps in Thailand, just ripened.