Lemon Meringue Pie I

Ingredients

• 4-1/2 cups sifted all-purpose flour
• 2 teaspoons kosher salt
• 2 teaspoons sugar
• 12 ounces (3 sticks) cold unsalted butter, cut into pieces
• 1/2 cup ice water (strain out the ice just before using)
• 1-1/2 cups sugar
• 3-1/2 tablespoons cornstarch
• 3 tablespoons flour
• 1/4 teaspoon salt
• 1-1/2 cups water
• 1-1/2 lemons, zested
• 1/3 cup lemon juice
• 1/4 teaspoon lemon extract
• 3 egg yolks
• 2 tablespoons butter
• 1/2 cup sugar, superfine
• 2 tablespoons water
• 4 large egg whites
• 1/2 teaspoon cream of tartar