2 cups whole milk
1/2 cup granulated sugar
4 large egg yolks
1/4 cup cornstarch
2 tbsp unsalted butter
1 tsp vanilla extract
Zest of 1 lemon
2 tbsp fresh lemon juice
For the Glaze (optional):
1/2 cup powdered sugar
1–2 tsp lemon juice or milk
Instructions
1. Prepare the Puff Pastry
