I grabbed one of these from Aldi recently:
Brand: VitaLife Root Beer Prebiotic Soda.
Origin: Batavia, IL.
Purchase Place: Aldi, Minneapolis, MN.
Sweetener: Stevia.
Review: This is a kombucha-like prebiotic soda that's flavored like root beer. Because of that, it has a LOAD of fiber: the 3rd ingredient is inulin which makes the can loaded with 9 grams of fiber. The ingredients list was pretty big, so I didn't know what to expect with the taste.
It smelled like root beer, and upon first taste, it TASTED like root beer as well. But after a second, it gets a little odd caramel / fruit / sweet taste that just kind of takes over. That ruins the experience a bit - it starts well, but ends tasting odd. If it could just stay as the initial flavor, this would be an 8 or so in my book, but the weirdness that happens at the end of each sip really takes its toll overall. Decent, but not great.
Score: 5.5 out of 10.