Mustard seeds are the small round seeds of various mustard plants. The seeds are usually about 1 to 2 millimetres (0.039 to 0.079 in) in diameter and may be colored from yellowish white to black. They are an important spice in many regional foods and may come from one of three different plants: black mustard (Brassica nigra), brown mustard (B. juncea), or white mustard (Sinapis alba).All parts of the mustard plant are edible, including the seeds, leaves, and flowers; it is in the same genus as cabbage and turnips and is an annual plant. There are over 40 different varieties of mustard plants, but three are the most popular for culinary use; black, brown, and white mustard seeds typically go into recipes and making mustard. All three varieties are found in the U.S. as well as other parts of the world.
Mustard is the second most-used spice in the United States, as its usage is only exceeded by the peppercorn. And it’s no wonder since mustard works well with all types of meats, pork, poultry, and seafood. You may be used to standard yellow prepared mustard, but there are other wonderful varieties of seeds and prepared mustards to experiment with.