When compared to the brown mustard seeds, the black mustard seeds are a little bigger. The black mustards have a slightly stronger flavor than the brown mustard; however, brown mustards are used mainly for regular cooking. The black mustards, which are a product of Brassica Nigra, are famous in Asia and the Middle East.
In Asian countries, black mustards are used for making pickles. The brown mustard, derived from Brassica juncea, has its origins in the Himalayas. Black mustard is classified as brassica nigra, and it is cultivated for it’s black or dark brown seeds, which are commonly used as a spice. The seed oil of mustard is also used to make medicine.