Simmer half a pound of white sugar in three-quarters of a pint of
water, with the thinly cut peel of two lemons; when the sugar is
melted, add an ounce of dissolved isinglass, and the juice of three
lemons, a glass of brandy and three of sherry, beat up with this the
yolks of five or six eggs. Place the basin in which it is mixed into a
pan of boiling water to thicken it, then pour it into a mould and set
it to cool; if it does not thicken by being put in a pan of boiling
water, set the pan on the fire and stir it for a few minutes.