"Karpatka, one of the most popular Polish cakes, has two layers of choux pastry sandwiched with a decadent vanilla cream filling...."
INGREDIENTS
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5 large egg yolks
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2/3 cup granulated white sugar (divided into 1/3 cup + 1/3 cup)
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7 tablespoons potato starch
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2 1/2 cups whole milk
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1/4 teaspoon salt
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2 teaspoons pure vanilla extract
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2 teaspoons vanilla bean paste (or more vanilla extract)
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200 grams unsalted butter (at room temperature (this is about 14 tablespoons + 1 teaspoon of butter))
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2 tablespoons granulated white sugar
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3/4 cup water
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6 tablespoons unsalted butter
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1/8 teaspoon salt
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3/4 cup all-purpose flour
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3 large eggs
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1 large egg yolk
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Butter (to grease the pans)
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Powdered sugar (for dusting on top)