Rhubarb Cream Soda is like a less sweet version of Strawberry Rhubarb Parfait with the tartness turned all the way up. The initial sip is a bit like berry-rhubarb pie with a dollop of cream, but the sour, tart, dry flavors quickly overtake the sweetness and cream, and it reminds me a bit of red wine. Rosehip, hibiscus, and red currant are all rather strong in this.
In the end, this one is just too sour and tart for me. I like the sweet parts, but the sour taste it leaves in my mouth is actually rather unpleasant. The dry quality of hibiscus is also always off putting to me.