Key Lime Pie Phyllis Russell Carlson Mix together: 1 can condensed milk 4 egg yolks 1/2 c. lime juice Beat 1 egg white stiff; fold into above mixture. Beat 3 egg whites and gradually add 6 Tbsp. sugar and 1.2 tsp. cream of tartar to make meringue topping. Place filling in baked pie shell. Top with meringue mixture. Bake at350 until egg whites are golden brown.