dragonfruit...

...or pitaya, as it is less commonly known.  Dragonfruit is the fruit of several cactus species grown throughout Asia and Central and South America.  For all its exoticism and show-stopping look-at-me-ness, the flavor is comparatively disappointing, rather like a bland, mildly sweet melon.  I would, however, happily try one again, unlike the esoteric, fruity treat I tried last year, the ill-natured and hideously repellant Durian, a food I might taste once more, but without so much happiness.