Maybe a batch issue
This is my drink of choice. NM normal supermarket was out of stock therefore I ordered 12 bottles from Tesco. I don't know if it is a batch thing but I have discarded the first two that I have opened as they are flat. They tasted awful.
Disappointing chemical taste
I Love Bottlegreen cordial but bought this, as like many others during lockdown, trying to reduce my calorie intake. It was so disappointing had an almost chemical taste. I'll take the extra calories and stick to the cordial.