Food & Cooking Recipes Healthy Recipes Gluten-Free Recipes Horseradish-Mustard Sauce 3.4 (44) By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on May 16, 2017 Print Share Share Tweet Pin Email Yield: Makes about 1 1/3 cups A mix of three no-cook ingredients, this simple dipping sauce for our Fondue Bourguignonne can be made in advance. Ingredients 1 cup sour cream (8 ounces) 6 tablespoons prepared horseradish 1 ½ tablespoons Dijon mustard Coarse salt and freshly ground pepper Directions Stir sour cream, horseradish, and mustard in a small bowl; season with salt and pepper. Print