Black And Brown Mustard Seeds refers to the most pungent of the three but are also the least common. These are less spicy than black and spicier than white mustard seeds that can be seen in most types of brown mustard condiments. Black And Brown's Mustard Seeds are hard to make out a difference in the flavour, the black mustards have a slightly stronger flavour than brown mustard. Black And Brown Mustard Seeds are mainly used for seasoning foods. These are mainly used for regular cooking that is used in making pickles.