Prepared mustard is a mainstay of great barbecuing and grilling. Dijon-style mustard is a smooth, tart, French-style mustard typified by Grey Poupon. Grain mustard, or Meaux-style, is a coarsely ground French-style mustard that is not sweet. Honey mustard is a dulcet American-style mustard sweetened with honey and sometimes thickened with eggs. Ballpark mustard is a traditional sharp American mustard colored with turmeric.