Dietz & Watson® Black Forest Knockwurst. Natural casing. Premium meats & artisan cheeses. No MSG added. Gluten free. Handcrafted since 1939. Fully cooked. Certified gluten free by Celiac Sprue Association. U.S. inspected and passed by Department of Agriculture. EST. 9574. Knockwurst: a traditional old world knockwurst in natural casing. Great on a hard roll with mustard or sauerkraut. Questions or comments: 800-333-1974. www.dietzandwatson.com. Dietz & Watson ©13.