100% natural. Since 1852. Contains no MSG/Gluten free. Visit plochman.com for recipes and more information. Questions or comments? Call 800-843-4566. The best mustard 'round. A True Original: In 1883, Moritz Plochman pledged to make first-class mustards only. From creating the classic squeeze barrel back in the 1950s to adding new varieties over the years, we've remained committed to making the best mustard 'round. Find ideas and recipes at plochman.com. Made in USA.