Combine: Place the flour and the soft lard in the food processor. Pulse until mixed.
Dissolve the fresh yeast and the sugar in the lukewarm milk. If using instant yeast, add it to the flour.
Add the yeast-milk mixture to the flour and lard, and add the egg yolk, whole egg, and salt. If using instant yeast, add the lukewarm milk now as well.
Knead until the dough is smooth and doesn't stick to the walls of the machine anymore. Place the dough on the working surface and knead shortly with the hands. Form a ball.
Dough in a food processor: If making the dough without a food processor, mix the flour and the lard with the help of a butter knife. Add the lard in small pieces to the flour and keep cutting through it with a knife until roughly incorporated. Add the dissolved yeast and the rest of the ingredients and knead until the dough is smooth and doesn't stick to your hands anymore. Form a ball.
Let dough rise: Place the dough in a large bowl, cover it with a cloth and let rise in a warm place for about 40-60 minutes or until doubled in size.