What a treat to try a brand new fruit, especially one as gorgeous and exotic-looking as the dragonfruit. My coworker was given this particular fruit by one of our customers, and he was generous enough to share it with me.
Dragonfruit is the common name for pitaya, the fruit from the cacti of the genus Hylocereus. They are common to Mexico and South America, but can be grown in our Mediterranean climate as well.
When the exterior of the fruit is cut open, the soft inner flesh becomes exposed. The flesh is interspersed with tiny edible black seeds. The fruit tastes very mild and is reminiscent of a kiwi.
My coworker advised that in Vietnam the dragonfruit is considered particularly beneficial for men, and is thought to help prevent colon and rectal cancers.