In a large bowl, combine 3 cups of all-purpose flour, 1/4 cup of sugar, and 2 teaspoons of fresh yeast. Gently warm 1 cup of milk until lukewarm, then pour it into the flour mixture. Stir until a shaggy dough forms.

Turn the dough onto a lightly floured surface. Knead for about 10 minutes until the dough becomes smooth and elastic.

Place the kneaded dough in a greased bowl, cover it with a damp cloth, and let it rest in a warm area for about 1 hour or until it doubles in size.

Once the dough has risen, punch it down gently to release the air. Roll it out on a floured surface to about 1/2 inch thick. Use a donut cutter to shape your donuts.

Heat vegetable oil in a deep pan over medium heat until it reaches 350°F (175°C). Carefully add a few donuts at a time and fry each side for about 2-3 minutes.

Allow the fried donuts to cool completely on a wire rack.

Whip 1 cup of cream until soft peaks form. Use a piping bag to fill each cooled donut with the whipped cream.

Dust the filled donuts lightly with powdered sugar just before serving.