Got waitrose it is currently the best of the bunch. Did a wine type test on it. Smelled it, sipped it, tasted it. Not unpleasant but not a whiff of blackcurrant. I would call it a sweet blackcurrant-coloured drink. if I was blindfold I would not even think it had anything to do with blackcurrant.
Was it something to do with the weather that they did not develop the proper taste?