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 a lightly floured counter and knead by hand until smooth and elastic, at least 12 minutes.