5 calories per 1 tsp. See nutrition information for sodium content. No 1. Grade mustard seeds. Estd. 1869. 100% natural. A common condiment done uncommonly well. This bold and flavorful mustard is made with 100% natural ingredients including stone-ground mustard seeds and a secret blend of spices and vinegar. It's the perfect balance of spice and tang to add some kick to any meal try it today on deli sandwiches, hot dogs and sausages. heinz.com. Questions? Comments? Call 1-800-255-5750.