To one pound of fine sifted sugar, put the yolks of ten eggs, (have
the whites in a separate pan,) and set it, if in summer, in cold
water: if there is any ice set the pan on it as it will cause the
eggs to be beat finer. Then beat the yolks and sugar well with a
wooden spoon for 20 minutes, and put in the rind of a lemon grated;
beat up the whites with a whisk, until they become quite stiff and
white as snow. Stir them into the batter by degrees, then add three
quarters of a pound of well-dried flour; finally put it in a mould in
a slack oven to bake.