39. SPONGE BISCUITS.

Beat the yolks of 12 eggs for half an hour; then put in a pound and a

half of beaten sifted sugar, and whisk it till it rises in bubbles;

beat the whites to strong froth, and whisk them well with the sugar

and yolks, work in 14 ounces of flour, with the rinds of 2 lemons

grated. Bake them in tin moulds buttered, in a quick oven, for an

hour; before they are baked, sift a little fine sugar over them.