0 calories per 1 tsp. USDA Organic. Certified Organic by Oregon Tilth. See nutrition information for sodium content. Estd 1869. Made with the finest ingredients, including organic stone-ground mustard seeds and a secret blend of organic spices and vinegar, for the perfect balance of flavor and tang. Heinz, uncommon quality since 1869. heinz.com. Questions or comments? call 1-800-255-5750.