1. Combine russet potato and chicken broth in a large saucepan. Bring just to boiling. Reduce heat and simmer, uncovered, until potato is tender, 12 minutes. Remove from heat. Using a potato masher, mash potato until mixture is nearly smooth.
2. Cut corn kernels from two ears; carefully cut remaining ear crosswise into 1-inch pieces.
3. Stir milk, corn, turkey, sweet potatoes and pepper into saucepan with potato mixture. Bring just to boiling. Reduce heat and cook, uncovered, until sweet potato is tender, 12 minutes. Stir in parsley just before serving. Makes 4 servings.