Prepare the Yeast Mixture:

• In a bowl, mix warm water, active dry yeast, and a tablespoon of granulated sugar. Let it sit for about 10 minutes until it becomes bubbly and frothy.

Make the Donut Dough:

• In a mixing bowl or stand mixer, combine all-purpose flour and granulated sugar. Add the egg yolks, soft butter, and milk.

• Once the yeast mixture is ready, add it to the bowl with the other ingredients.

Knead the Dough:

• Knead the dough with a stand mixer using the dough hook for 15-20 minutes on medium speed, until smooth and elastic.

Proof the Dough:

• Place the dough in a greased bowl and proof for 1½ hours in a warm environment (around 84°F or 29°C). The dough should double in size.

Shape the Donuts:

• Once the dough has risen, roll it out to about 0.25 cm (0.1 inches) thick. Use a 6 cm (2.36 inches) cookie cutter to cut the dough into donut shapes.

• Let the donuts proof again in a warm place for 30 minutes, until they become puffy and about 0.5 cm (0.2 inches) thick.

Fry the Donuts:

• Heat the oil to 180°C (356°F) for frying. Keep the oil temperature at 175°C (347°F) as you fry the donuts.

• Fry the donuts for about 2 minutes on one side, flip them, and cook for another 2 minutes. Flip again to cook until golden brown and crispy.

Drain the Oil:

• Remove the donuts from the oil and place them on a plate lined with paper towels to drain excess oil.

Prepare the Cheesecake Filling:

• In a bowl, mix together cream cheese, powdered sugar, and strawberry jam until smooth and combined.

Assemble the Donuts:

• Once the donuts have cooled slightly, pipe or spoon the cheesecake filling into the center of each donut.

Decorate:

• Garnish the donuts with fresh strawberries and a light dusting of powdered sugar.