This is a very old recipe for egg custard. If you like cooking vintage recipes for a taste of the old life, this one is for you. You can also convert this recipe to make tarts or a pie. You can add nutmeg and other spices to taste, or you can bake a pie crust and pour custard into that as well.
Whisk eggs and sugar together in a large pot. Gradually add milk, whisking constantly. Stir in vanilla.
Heat milk mixture over low heat, stirring constantly. Cook, stirring occasionally, until mixture thickens and coats the back of a wooden spoon, about 30 minutes. Pour into a serving dish and allow to cool.