Orange Sweet Potatoes
["6 medium sweet potatoes", "2 tsp. grated orange rind", "1 Tbsp. cornstarch", "1/3 c. sugar", "1/3 c. brown sugar, firmly packed", "pinch of salt", "1 c. orange juice", "3 Tbsp. butter or margarine"]
["Cook sweet potatoes in jackets in 1/2 inch of boiling, salted water until tender, about 30 minutes.", "Remove skins."]
["sweet potatoes", "orange rind", "cornstarch", "sugar", "brown sugar", "salt", "orange juice", "butter"]