A quarter of a pound of boiled sweet potato. Three eggs.
Pound the spice, allowing a smaller proportion of mace than of nutmeg and cinnamon.
Boil and peal some sweet potatoes, and when they are cold, weigh a quarter of a pound. Mash the sweet potato very smooth, and rub it through a sieve. Stir the sugar and butter to a cream.
Beat the eggs very light, and stir them into the butter and sugar, alternately with the sweet potato. Add by degrees the liquor, rose-water and spice. Stir all very hard together.
Spread puff-paste on a soup-plate. Put in the mixture, and bake it about half an hour in a moderate oven.
Grate sugar over it.