I’ve never heard of this one and that’s because it’s an Applebee’s franchise exclusive fountain soda. Rightly so, because they shouldn’t be trying to sell this anywhere. Maybe it was a bad mix at this particular restaurant, because the aftertaste really stood out; it was really strong and very artificial flavoring. A search says it’s “blending blue raspberry and blackberry with Mountain Dew’s citrus base, similar to Voltage but with darker berry notes.” Voltage is one of the rare flavors I’ll buy at the store and Dark Berry Bash tastes nothing like it. I can only give it a 2/10 and it was so bad I’m not sure I’d try it again to find out if I got a bad batch.