Mustard, also known as horseradish mustard.Grated mustard powder is made from the mature seeds of mustard plants.Mustard.is a powdered condiment ground from its mature seeds.Mustard has a slightly bitter taste with a pungent aroma that strongly stimulates the palate; it has a unique flavor and when moistened, emits an aromatic scent with a strong irritant spicy taste.It can be used for pickling raw meat or as a condiment in salads.salads.Also paired withsoy sauce, it serves as a delicious seasoning for sashimi.Mustard originated in China and has a long history; it was consumed in the imperial court since the Zhou Dynasty and is traditionally regarded as a natural medicinal herb.It later spread to Japan, where, due to its strong detoxifying properties that help counteract fish or crab toxicity, it became widely used, especially in Japanese cuisine such asmochi noodles, sashimi,and sushi.Commonly, the root of mustard is ground to make condiments.Freshly ground mustard has a light green color and stickiness, emitting fresh aromas and spicy flavors.While Western mustard and Japanese mustard appear as completely different plants, their chemical components causing spiciness are identical.The spiciness of Western mustard is on average 1.5 times stronger than that of Japanese mustard.Green mustard and yellow mustard are two entirely different condiments.Yellow mustard originates from China, made by grinding the seeds of mustard plants, presenting a light yellow color with a slightly bitter taste; it is a common spicy condiment often used incold dishes.Medicinally, Chinese yellow mustard has been consumed internally to treat vomiting and abdominal pain and externally for joint inflammation.Green mustard originates from Japan, made by grinding wasabi or horseradish, presenting a green color with stronger pungency than yellow mustard and a unique aroma; it is widely used in Japanese cuisine.