Kosciusko® Spicy Brown Mustard. Net Wt. 9 oz. (255 g). Kosciusko Spicy Brown Mustard's award-winning old world flavor is a zesty addition to sandwiches, meat dishes and recipes. Produced with genetic engineering. ®/™ of Plochman, Inc. Questions or Comments Call: 800-843-4566. Find ideas and recipes at: www.plochman.com. ©Plochman, Inc.