Boiled Custard
["1/2 gal. sweet milk", "6 egg yolks", "1 c. sugar (full measure)", "2 Tbsp. flour", "1 Tbsp. vanilla"]
["Heat the milk in", "a", "double", "boiler", "until forms a skim (light).", "While the milk", "is heating, beat the egg yolks well, then add the sugar\tand", "flour,", "which", "have", "been mixed well. When the milk is hot,", "remove the skim.", "Add the egg and sugar mixture slowly,", "stirring", "constantly.", "When", "this\thas cooked long", "enough to lightly", "coat", "the\tspoon,\tit", "is\tdone.", "Add vanilla.", "(Optional, you can add beaten egg whites into this.)"]
["sweet milk", "egg yolks", "sugar", "flour", "vanilla"]