Brown Mustard can be used in vegetarian dishes, barbecue sauce, rubs or marinades for grilling. To add to salads, toast the mustard seeds first in oil on Medium high heat for about 1 minute, or until they become fragrant. vinegar or lemon juice to help mellow out the flavors. Free Of Gluten, GMOs, salt, MSG, preservatives, sugar, irradiation, peanuts, soybeans, milk, eggs, crustacean shellfish, tree nuts, wheat, artificial coloring.