Dissolve the fresh yeast in the milk and add a teaspoon of sugar.
Let it sit for 5 minutes.
In a mixing bowl, combine the flour, remaining sugar, salt, vegetable margarine, and 2 whole eggs and 2 yolks, add the yeast mixture and knead for 10 minutes on medium speed in the kitchen robot, or until the dough pulls away from the sides and you have a nice elastic dough.
Turn out onto a large sheet of plastic wrap, and wrap it tightly into a flat round piece of dough.
Let it set for a minimum of 4 hours in the refrigerator.
Preheat your oven to 180°C.
Dust your work surface with flour and cut into 8 equal pieces.
Grease a long cake pan and flour it.
Shape the 8 pieces of dough with some flour and place them in the cake pan.
Press down well.
Let rise for at least 20 - 30 minutes in the oven at 40°C until they have risen nicely.
Brush with egg wash and bake for 35-40 minutes.
Let cool.