Line 9 inch pie pan with pastry. Combine 1/4 cup cornstarch and 1/4 cup water in medium saucepan. Add boiling water. Cook over medium neat until mixture comes to a boil. Boil until mixture thickens (1 minute). Stir in sugar, lemon rind and butter. Cool. Stir in eggs and lemon juice. Pour into pie crust. Top with pastry. Slit for steam. Brush with 1 Tbs. milk and sprinkle with 1 Tbs. sugar. Bake at 275 degrees for 30 minutes then 425 degrees for 10 minutes until golden brown. Cool on wire rack.
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