Make the crust: Whisk flour, granulated sugar, and salt in a bowl. Using a dough blender, two forks, or your fingers, cut butter into flour mixture, forming pea-size crumbles. Add water; work dough until smooth but with visible flecks of butter. (Alternatively, pulse ingredients in a food processor.) Flatten dough into a disk and wrap in plastic wrap; chill 1 hour.
On a lightly floured surface, roll dough into a 12" round. Fit into a 9" pie plate. Trim edges and crimp; chill 30 minutes.
Heat oven to 375�. Using a fork, prick dough all over. Line dough with parchment paper and fill with pie weights or dried beans; bake until golden, about 20 minutes. Remove paper and weights; let cool.
Raise oven temperature to 400�F. In small bowl, beat egg yolks with fork. In 2-quart saucepan, mix sugar and cornstarch; gradually stir in water. Cook over medium heat, stirring constantly, until mixture thickens and boils. Boil and stir 1 minute.
Immediately stir at least half of hot mixture into egg yolks; stir back into hot mixture in saucepan. Boil and stir 2 minutes; remove from heat. Stir in butter, lemon peel, lemon juice and food color. Pour into pie crust.
In medium bowl, beat egg whites and cream of tartar with electric mixer on high speed until foamy. Beat in sugar, 1 tablespoon at a time; continue beating until stiff and glossy. Do not underbeat. Beat in vanilla. Spoon onto hot pie filling. Spread over filling, carefully sealing meringue to edge of crust to prevent shrinking or weeping.
Bake 8 to 12 minutes or until meringue is light brown. Cool away from draft 2 hours. Cover and refrigerate cooled pie until serving. Store in refrigerator.
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