Soak one ounce of pink gelatine in a cupful of cold water until soft. Pour over it two cupfuls of boiling water and stir until dissolved. Add a cupful and a half of sugar, and enough of the extract of rose to flavor it very decidedly. Set the jelly thus made in a cool place, and when it begins to form whip it into the whites of three eggs which you have beaten to a froth. Beat until the jelly and the eggs are a stiff sponge, and then turn this into a prettily shaped mould wet with cold water. Let it stand on the ice for some minutes before it is used.