Russian Napoleon Cake

[nverland]

Russian Napoleon Cake (Napolyeon Tort)
Prep: 40 mins Cook: 80 mins Chill: 7 hrs Total: 9 hrs Servings: 9 servings

Ingredients

For the Pastry Layers:
2 ounces (1/4 cup) unsalted butter, softened
1 tablespoon granulated sugar
1 cup sour cream, at room temperature
2 large egg whites, at room temperature, stiffly beaten
1 tablespoon vodka
1 pinch kosher salt
2 1/2 cups (180 grams) all-purpose flour

For the Custard Filling:
5 cups whole milk
10 large egg yolks, at room temperature
1 large egg white, at room temperature
2 1/2 cups granulated sugar
6 tablespoons all-purpose flour
8 ounces (1 cup) unsalted butter
1 tablespoon pure vanilla extract

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