You are here: Home » Recipes » Double Potato Bisque Double Potato Bisque Recipe by Relish ContributorKitchen Tested Yield 4 to 6 servings Sweet potato and potato combine in this mild, smooth, intensely flavored soup. PrintEmail Ingredients 1 large sweet potato (yam), peeled, cut into 1/2-inch cubes (2 cups)1 large baking potato, peeled and cut into 1/2-inch cubes (2 cups)1 onion, chopped1/2 teaspoon minced garlic1 (14 1/2-ounce) can vegetable broth1 teaspoon dried thyme leaves1/8 teaspoon cayenne pepper1 (12-ounce) can evaporated skimmed milk Salt and pepper Green onion stems, optional Instructions Combine diced sweet potato, potato, onion, garlic and vegetable broth in a large pot and bring to a boil. Simmer potatoes on reduced heat for 15 minutes until potatoes are tender. Blend mixture in a food processor until smooth. Return to original pot. Add thyme, cayenne and evaporated milk. Cook over low heat and season to taste. Garnish with green onions.