Finely grated rind and the juice from 4 lemons.(try to avoid the white part when grating, as this tends to be bitter), and strain the juice. 4 eggs
Beat the eggs just a little, put all ingredients into a double boiler or a bowl standing in hot water. Cook slowly until thick, checking every now and then to make sure all the water in the bottom pan hasn't boiled away. Should be nice and thick and smooth. Put into Hot jars, and cover when cold.
