Candied Yams
["1 lb. unsalted butter", "2 lb. sweet potatoes, peeled and coarsely chopped", "2 c. water", "1 c. sugar", "1 c. packed dark brown sugar", "2/3 unpeeled orange, sliced and seeded; stem slice discarded", "2 sticks cinnamon", "1 Tbsp. vanilla", "1/2 tsp. ground mace", "2/3 unpeeled lemon, sliced and seeded; stem slice discarded"]
["Heat butter in 4-quart saucepan over high heat; when about half melted, add remaining ingredients.", "Stir, cover and cook over high heat until mixture comes to a strong boil, about 10 minutes. Stir, reduce heat and simmer covered for 20 minutes.", "Remove cover and continue cooking until potatoes are very tender, about 20 minutes, stirring occasionally.", "Remove from heat, discard cinnamon.", "Serve immediately.", "Makes 10 to 12 servings."]
["unsalted butter", "sweet potatoes", "water", "sugar", "brown sugar", "orange", "cinnamon", "vanilla", "ground mace", "lemon"]