Koops'™ Mustard Organic Spicy Brown. Old World recipe - coarsely ground for subtle boldness. Gluten free. USDA Organic. Net Wt 12 oz (340 g). Our family has made great-tasting mustard since 1897. This USDA Certified Organic mustard contains the highest quality ingredients that come from certified organic farms. Our founder, Peter Koops, would be proud. Certified Gluten-Free. Certified Organic by Quality Assurance International. Visit: www.koopsmustard.com.