Ingredients:
1 teaspoon flour
4 egg yolks
1 pint white wine
1 tablespoon sugar
1 tablespoon lemon peel
a little cinnamon

Preparation:

Stir 1 heaping teaspoonful of flour with the yolks of 4 eggs and 1 pint of white wine; take a tablespoonfuls of sugar, lemon peel and a little cinnamon, stir all together and let it come almost to a boil, stirring constantly, then pour into another vessel, stir so that it will not curdle and put into a sauce boat.