Sponge–Lemon or Orange. (Mrs. Wellington and Mrs. Fordyce Buchan. 1880.)
Soak ¼ oz. gelatine for 1 hour, in 1 pt. of cold water. Then add ½ pt. of boiling water, let it again come to the boil, add ¼ lb. loaf sugar with the rind of 4 lemons or oranges rubbed on it (but orange sponge would want half the sugar only), add the juice of the fruit also; all to dissolve and come to the boil as for jelly; then strain it into a large basin to cool.
Add the well-whipped whites of 2 or 3 eggs and whisk all stiff together ½ hour till white. Pour into a rinsed mould and bury in ice 2 or 3 hours.