Lemon Pie
["1/2 c. flour", "1 c. sugar", "1/3 tsp. salt", "2 c. boiling water", "2 eggs, separated", "juice and rind of 1 lemon", "1 Tbsp. butter"]
["Mix together flour and sugar. Add the boiling water slowly, stirring constantly.", "Cook 15 minutes over hot water. Add to beaten egg yolks. Return to", "heat and cook for 2 minutes to thicken the yolks. When thickened, remove from heat and stir in lemon juice and grated rind. Add butter and salt; mix well. Pour into a baked pie shell and cover with meringue made with the egg whites."]
["flour", "sugar", "salt", "boiling water", "eggs", "lemon", "butter"]