O.T.C. Oyster Crackers also make a popular snack because of their texture and flavor. Try pairing them with cocktail sauce, mustard or horseradish to add a zesty flavor, or serve them with your own favorite dips for a variety of flavor. O.T.C. Oyster Crackers: All natural ingredients Firm texture Kosher Delicious in soups, stews, casseroles and much more.