Lemon Curd No. 2651 Yields 1 Cup 3/4 Cup Granulated Sugar 1/3 Cup Lemon Juice 3 Tbls Cornstarch 1 tsp Lemon Rind, Grated 3/4 Cup Water 2 Tbls Butter 1 Egg, Lightly Beaten Stir the sugar and cornstarch in the top portion of a double boiler. Stir in the water. Beat in the egg, lemon juice and lemon rind. Cook over - not in - boiling water until the mixture thickens. Remove from the heat. Stir in the butter, Cool.