Boiled Custard
["4 c. milk", "4 egg yolks, beaten", "4 Tbsp. sugar (rounded)"]
["Mix and", "cook in double boiler.", "Start with cold water. This is usually", "done when it coats a spoon, about 30 minutes. Beaten egg whites", "can", "be", "folded", "in just before serving, if desired."]
["milk", "egg yolks", "sugar"]