Orange sponge cake - Recipe
Strain this mixture into a tin basin, which place in a pan of ice water. Beat with the whisk occasionally, until it has cooled, but not hardened.
Now add the unbeaten whites of the eggs, and beat all the time until the mixture begins to thicken. Let it thicken almost to the point where it cannot be poured, and then turn into a mould and set away to harden.
Remember that the whites of the eggs must be added as soon as the mixture cools, which should be in about six or eight minutes, and that the mixture must be beaten until it begins to harden. The hardening is rapid after it once begins, so that it will be necessary to have the moulds all ready. The sponge will not be smooth and delicate if not poured into the moulds. If for any reason you should get the mixture too hard before pouring, place the basin in another of hot water, and let the sponge melt a little; then beat it up again.
Serve with powdered sugar and cream.