Stir two tablespoonfuls of butter and half a cupful of sugar to a cream; stir into this the yolks of four eggs, well beaten, the juice and grated rind of one lemon and half a dozen sound, green tart grated. Now stir in the four beaten whites of the eggs, season with cinnamon or nutmeg; bake. To be served cold with cream.
Source:
The Whitehouse Cookbook (1887)