I have been looking for a rhubarb-based AF spirit, particularly one that isn't too sweet. CROSSIP Pure Hibiscus has rhubarb tartness but the predominant note is pine. It even smells medicinal - not unlike Germolene. I didn't dislike the taste but it is a bit of misnomer to call this fruity and it does seem to have divided opinion in other online reviews.
I bought this from Amazon.co.uk for £17.60. The bottle has undergone a redesign, probably the reason for the discount on this. On reflection, I wish I'd paid full price for CROSSIP Dandy Smoke. One for another time.
Score: 3 out of 5