Two cups of sugar, five tablespoonfuls of flour, the grated rind of four lemons, one-half cup lemon juice, two eggs, two teaspoonfuls of butter.

Mix sugar and flour, add grated rind, lemon juice, and egg slightly beaten. Put butter in saucepan; when melted, add mixture, and stir constantly until boiling-point is reached. Care must be taken that mixture does not adhere to bottom of saucepan. Cool before spreading.