METHOD
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Preparation
We traditionally bake potica in a cake pan called "Poticnik." It's similar to a bundt cake pan, so you can use that. Grease a 24cm or 10-inch bundt cake pan with butter and set aside.
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Knead and first proofing
Add flour, yeast, lukewarm milk, egg yolks, sugar, vanilla, and rum (optional) to a bowl of a stand mixer fitter with a dough hook. Or use a simple bowl (if you’re going to knead with your hands). Knead for 5 minutes with your stand mixer or 10 minutes by hand. Add the butter and knead into an elastic dough. Cover the bowl with a kitchen towel or cling film and leave to proof at room temperature for 60 - 90 minutes or until doubled in size.
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Lemon filling
Add sugar and grated zest of two lemons to a small bowl. Rub between your fingers for the sugar to infuse the lemon flavor. Add Limoncello, freshly squeezed lemon juice, and egg yolks. Beat to combine with a whisk, then add to a non-stick pan. Place over low heat. Cook for 5-6 minutes, stirring continuously to prevent scrambled eggs from forming. It should not boil.
TipWhen you run your spatula on top of the bottom, the lemon mixture should stay in one place for a second. That’s how you know it has thickened enough. -
Lemon filling
Remove from the heat, and add the butter into a warm lemon mixture. Stir well to incorporate. Set aside and bring to room temperature. Stir in the ricotta, semolina, and flour for a smooth mixture. Refrigerate for 30 minutes.
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Potica
Sprinkle your working surface with flour. Place your dough on the working surface and roll into a 30 cm x 60 cm (12-inch x 24-inch) rectangle. Spread the Lemon Ricotta filling, leaving an 8cm (3-inch) edge on top. Roll into a tightrope. Start rolling on the short side that’s closest to you. Gently transfer the Potica into the prepared pan with a seam-side down.
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Second proofing
Cover the potica in the pan with a damp cloth or cling film and leave to proof for 60 - 90 minutes at room temperature or until doubled in size. Set a rack in the middle of the oven and preheat it to 180 °C or 350 °F.
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Bake and serve
Using a brush, gently brush the potica with lukewarm milk. Use a skewer to poke holes all over the top of the potica all the way through to prevent air bubbles from forming and separating the filling from the dough. Transfer the potica to the preheated oven. Bake for 50 minutes at 180 °C / 350 °F. Cover the potica with aluminum foil after about 30 minutes if it is browning too quickly. When baked, remove from the oven. Let cool slightly for about 5 minutes, then invert onto a wire rack and remove the pan. Leave the potica to cool, then sprinkle with icing sugar and serve. Enjoy.