A British convenience store
Once upon a time I bought a blackcurrant-flavored soda in the U.K., and it was delicious, and I have never found it again. The Ribena blackcurrant soft drink I have found too sickly sweet; in a drink format, blackcurrant really needs carbonation to lift that sweet flavor. As far as the flat fruit drink goes, I ended up mixing that with some sparkling water and it turned out better. I still dream of you, true blackcurrant soda.