2. Make Dough
Add about 1/3 of the flour to the bowl with the yeast-water mixture. Add the sugar, oil, egg yolk, and salt. Stir until homogenous and soupy. Add another 1/3 of the flour. Mix until it gets little tougher than before. Add the remaining flour and mix until you cannot mix any longer.
Transfer the dough to the counter and knead by hand until smooth and elastic, at least 12 minutes.