Food & Cooking Recipes Healthy Recipes Gluten-Free Recipes Celeriac and Apple Mash 4.0 (21) Add your rating & review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Servings: 6 Celeriac, an ugly duckling, makes a beautiful mash, right, with blue cheese and apple. Ingredients 1 ¾ cups homemade or low-sodium store-bought chicken stock 1 cup water 1 pound celeriac (also called celery root), peeled and cut into 1-inch pieces 1 pound Yukon gold potatoes, peeled and cut into 1-inch pieces 1 medium Granny Smith apple, peeled, cored, and cut into 1-inch pieces 1 medium shallot, coarsely chopped 1 dried bay leaf Coarse salt 2 tablespoons unsalted butter, room temperature ¾ ounce blue cheese (about 2 tablespoons), such as Buttermilk Blue, Danish blue, or Roquefort, plus more for crumbling Directions Bring stock, water, celeriac, potatoes, apple, shallot, bay leaf, and 1 teaspoon salt to a boil in a large pot. Cook until tender, about 10 minutes. Strain, reserving liquid; discard bay leaf. Return celeriac, potatoes, apple, and shallot to pot, and add 3/4 cup reserved cooking liquid. Coarsely mash with a potato masher. Using a fork, mash together butter and blue cheese in a small bowl. Stir into celeriac mixture. Season with salt. Spoon into a warm serving bowl, and crumble blue cheese over top. Cook's Notes Mash can be made up to 1 hour ahead; transfer to a heatproof bowl, cover, and set over a pan of barely simmering water, stirring occasionally. Rate it Print