Ingredients:
- 1 1/4 cups (150g) all-purpose flour, plus more for dusting
- 1/2 teaspoon (2.5g) salt
- 1/2 cup (113g) cold unsalted butter, cubed
- 1/4 cup (60ml) ice water
- 1 1/2 cups (300g) granulated sugar
- 1/4 cup (30g) cornstarch
- 1/4 teaspoon (1.25g) salt
- 1 1/2 cups (355ml) water
- 1/2 cup (120ml) fresh lemon juice (about 3-4 lemons)
- 2 tablespoons (28g) unsalted butter
- 4 large egg yolks
- 1 teaspoon (5ml) lemon zest
- 4 large egg whites, room temperature
- 1/4 teaspoon (1.25g) cream of tartar
- 1/2 cup (100g) granulated sugar
- 1/2 teaspoon (2.5ml) vanilla extract
Instructions:
- Combine flour and salt. Cut in cold butter. Gradually add ice water until dough comes together. Form into a disc, wrap, and chill.
- Roll out the dough and transfer to pie plate. Crimp edges. Blind bake the crust.
- Whisk together sugar, cornstarch, and salt in a saucepan. Gradually whisk in water until smooth. Cook over medium heat, stirring constantly, until thickened and bubbly.
- Remove from heat and whisk in lemon juice, butter, egg yolks, and lemon zest until smooth. Cook for 1 minute more, stirring constantly.
- Pour the hot lemon filling into the pre-baked pie crust.
- In a clean, dry bowl, beat egg whites with cream of tartar until soft peaks form. Gradually add sugar, beating until stiff, glossy peaks form. Stir in vanilla extract.
- Immediately spread meringue evenly over the hot lemon filling, sealing the edges. Bake in a preheated oven until meringue is lightly golden brown or torch the meringue using a kitchen torch.
- Let the pie cool completely at room temperature, then chill in the refrigerator for at least 2 hours before serving.