McCormick Gourmet Collection Organic Ground Mustard is ground from the seeds of the mustard plant, a cousin of horseradish. Mustard’s sharp flavor offers the perfect counterpoint to rich ingredients like cheese and beef — from mac ‘n cheese and cheese sauce to meatloaf and a rub for roast. It gives party favorites like dips, deviled eggs, coleslaw, and potato salad a flavorful kick, while also spicing up sauces, glaze for ham, salad dressings, and more. McCormick Gourmet Collection Organic Ground Mustard is ground from the seeds of the mustard plant, a cousin of horseradish. Mustard’s sharp flavor offers the perfect counterpoint to rich ingredients like cheese and beef — from mac ‘n cheese and cheese sauce to meatloaf and a rub for roast. It gives party favorites like dips, deviled eggs, coleslaw, and potato salad a flavorful kick, while also spicing up sauces, glaze for ham, salad dressings, and more.