Make the sponge for your jelly roll by taking acup of white sugar, onecup of flour, and threeeggs. Mix, etc.; add baking powder with the flour. Bake in a stewpan with a quick fire; turn the cake out on a towel when done; spread the jelly while it is still warm and soft, and roll it carefully. Cut it in slices when cold; aspoonful of water beaten with the eggs makes the cake lighter, as it breaks the tissue of the eggs if it is added to them when beaten up.