|Picture from Logee's Tropical Plants|
More information here and here.
The taste of the fruit is said to be tomato-like. I don't agree - it's more tropical, and not to my liking, for some reason I find hard to pinpoint. I do use it as a garnish, though, and I like the large leaves and conversational aspects of growing it. It does take a lot of water during the summer.
If others are interested, I'll save some seeds and try to propagate it.