One 0.45 oz plastic bottle of Tone's Ground Mustard. Use this Ground Mustard in egg salads, cheese spreads and casseroles, and mayonnaise dressings. Tone's Ground Mustard is perfect for ham glaze and barbecue sauces. Established in 1873, Tone’s is the oldest spice brand in America whose focus on delivering quality spices at a value has stood the test of time. This plastic bottle of Tone's Ground Mustard is shelf-stable.