Rhubarb at Iserlohn Farmers Market By Foodie Pat on June 14, 2014 in Rhubarb Revival Placed near the vegetables and not the fruits…. Our German relatives enjoy teatime daily. We were served a Rhubarb Pudding Streusel Kuchen—purchased frozen in grocery store. Very good. Eating Rhubarb Jams also in Germany. Iserlohn farmers market has been happening for years.