Crepe Cake with Whipped Cream

Name: Crepe Cake with Whipped Cream
Ingredients: 4½ cups whole milk; 2½ cups heavy cream; 5 tablespoons unsalted butter, cut into pieces; Zest of 1 medium orange; ¾ teaspoon ground cardamom; ¼ teaspoon kosher salt; 1 vanilla bean, split lengthwise; 10 large egg yolks; 1 cup granulated sugar; ¼ cup cornstarch; 4 large eggs, room temperature; 4 cups whole milk; ⅔ cup granulated sugar; 1 teaspoon vanilla extract; 2⅓ cups all-purpose flour; ½ teaspoon kosher salt, plus more; 4 tablespoons unsalted butter, melted, divided; 1½ cups heavy whipping cream; 3 tablespoons powdered sugar; 2 teaspoons orange sanding sugar (optional)