Classic Lemon Meringue Pie

Ingredients

• 1 ½ cups all-purpose flour, plus more for dusting
• ½ cup (1 stick) unsalted butter, plus more for dusting
• 2 tablespoons sugar
• ¼ teaspoon kosher salt
• ¼ cup ice-cold water
• 1 ¾ cups sugar
• 6 tablespoons cornstarch
• ½ cup water
• ½ cup fresh lemon juice
• 3 large eggs yolks, beaten
• 2 tablespoons unsalted butter, cut into cubes
• 1 ½ cups boiling water
• 9 large egg whites
• ¾ cup sugar
• 1½ teaspoons vanilla extract
• ½ teaspoon cream of tartar