Here's a different and delicious twist on bisque.
The baking potato provides a good source of protein, complex carbohydrates and potassium while the sweet potato is a good source of beta carotene, fiber, and vitamins B and C.
Makes 4 to 6 servings.
In a large pot, combine the sweet potato, baking potato, onion, garlic, bay leaf, salt, thyme, and chicken broth and bring to a boil. Reduce the heat and simmer, covered, for 15 minutes, or until the potatoes are tender. Pour the mixture (minus the bay leaf) into a food processor and blend until smooth; return to the pot. Add the buttermilk, skim milk, and lime juice and cook over a low heat until heated through; do not boil. Remove bay leaf before serving.
Nutritional Information Per Serving: Calories 100, Protein 6 g, Carbohydrate 20 g, Fat 0 g, Calories from Fat 0%, Saturated Fat 0 g, Dietary Fiber 2 g, Cholesterol 0 mg, Sodium 281 mg
Recipe from "Eating Well Through Cancer" by Merck.