Dragon fruit

Pitaya. From Central America. Transplanted to southeast Asia, just like vanilla, and chile, where they really took off. They grow on cactus. And not just regular cactus, they grow on the weird kind of cactus like huge Christmas cacti at the ends of long leathery leaves. And they bloom six times a year and only overnight, but they're pollinated by bats and by moths which are impossible to manage.

See, you should never plant this type of cactus because it just invites dragons. 

A dragon comes flying in and poops out these scaled horned fiery dragon eggs all over these dragon cacti then the cactus owner must come out and collect the eggs. And the next night, boom, same thing all over again. If the eggs are left to hatch then you end up with a superabundance of dragons. You can see how quickly this gets out of hand by mere oversight or neglect. Trufax.

But what do they taste like. Let's ask the most critical of all taste experts.