METHOD
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make the yeast mixture
Combine lukewarm milk, water, yeast, and sugar in a bowl. Stir and set aside for 10 minutes.
TipThe water and milk temperature should be around 30 - 35°C or 85 - 95°F. -
dough
Add flour, eggs, egg yolk, rum (optional), salt, and the yeast mixture to a bowl of a stand mixer fitted with a dough hook. Feel free to use a hand-held electric mixer fitted with two dough hooks. Start kneading on low, set the stand mixer to medium speed, and knead for about 6 - 8 minutes or until the dough is elastic, smooth, and easily separates from the bowl. Add the butter and knead for another 3 - 4 minutes for the butter to incorporate into the dough and separate from the bowl easily.
TipIn the original (Slovenian) version of this recipe we use Žito Hit Mix flour mixture, but since it isn't available all over the world, we adjusted the ingredients. -
first proofing
Cover the bowl with the dough with clingfilm and leave to rise at room temperature (20 - 25°C / 68 - 77°F) until visibly increased, for about 1 hour - 1 1/2 hours.
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shaping and second proofing
Lightly dust a large baking sheet with flour. Roll the dough into a 2 cm (0.8 inch) thick rectangle using a rolling pin. Using an 8 cm (3-inch) heart-shaped cookie cutter, cut about 16 heart-shaped pieces of dough. Shape the leftover dough into 70g / 2.5 ounces balls for doughnuts. Place each piece of dough onto the prepared baking sheet. Leave enough space between the doughnuts to rise. Cover with a kitchen towel. Lightly sprinkle the towel with water. Leave the doughnuts to rise at room temperature for about 1 - 1 1/2 hours or until they triple in size.
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frying
Place a large pan (with a lid) over medium heat. Add the oil and wait until the oil reaches 170 - 180°C / 340 - 355 °F. Lightly dust your spatula with flour and carefully pick one doughnut. Turn it around in your hands so the seam looks up, and gently drop it into the oil. Add about 4 more doughnuts, depending on the size of the pan. The doughnuts should have some space to move, but not too much. Shake the pan slightly to distribute the doughnuts. Cover with a lid and fry for 2 - 3 minutes, then remove the lid, turn the doughnuts, and fry for another 2 - 3 minutes (uncovered). Transfer the heart-shaped doughnuts onto a paper towel-lined wire rack. Repeat the process until you fry all the doughnuts.
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fill and serve
Add all the sugars for the dusting into a deep plate and stir to combine. Coat the doughnuts in sugar, then fill with your favorite filling. If you fill them with apricot jam, add it to a saucepan and place it over low heat to warm it. Transfer to a pastry bag and pipe the doughnuts with the jam.