(New York Cooking School)

One cup of sugar, half a cup of water, the rind (pared off very thinly) of two lemons, with the strained juice; boil all together ten minutes; beat the yolk of three eggs. Strain the syrup, stir the the eggs into it, set the saucepan in another of boiling water, and beat rapidly till thick and smooth; remove from the water, and beat five minutes.