If it’s synonymous with the one sold as a novelty, called “Wonderberry,” you aren’t missing much. Despite the name, it really isn’t that wonderful. It’s mostly sold on its fictional history – allegedly a hybrid created by Luther Burbank, named Solanum × burbankii, it is actually a native South African species, Solanum retroflexum. Once the novelty wears off, it isn’t anything to get excited about.
That’s true of green beans and snow peas, too, if you want to get technical. For that matter, so are several of what we think of as spices – neither (culinary) fruits not vegetables, but seasonings.
Related thread: The Wonder of Spices - Nature Talk - iNaturalist Community Forum
I’m curious what that is? Like rhubarb, perhaps? A vegetative part of the plant, but used in fruit-like ways, such as pies and jam?