interesting! I just shot a jyunpaku Okinawan bitter melon short, forgot all about the ripe fruit, otherwise would have included the aril info
https://youtu.be/g0KuhoBa4f8To be honest, I don't care about the arils that much because I love the unripe fruit cooked as a vegetable or juiced for a shot of healthy - I harvest them all before they're ripe

[size=78%] [/size]
All varieties of bitter melons' arils (red) of a ripe fruit (orange) taste very sweet, even the mini weedy ones.
Even the arils of an unripe fruit have a very different taste than the bitter melon itself. I wouldn't say it's candy sweet but has a very (very!) mild sweet flavor, I wouldn't even call it a flavor, it's probably a hint of sweetness followed by a very light aftertaste of bitter that doesn't last long. An interesting super subtle flavor if you ask me, but I really like the bitter melons of all kinds, and this one is very pretty, with mild bitterness, the taste blends very well with other vegetables when you cook it, so all in all this vegetable has lots to offer and is worth growing, in my opinion, for many reasons. I would grow them for health benefits anyway, cherry or not