In a bowl, mix all the ingredients up to and including the yeast. Add the oil and milk, mix and knead into a soft, smooth dough. Cover and leave to rise at room temperature for approx. 1 hr. until doubled in size. On a lightly floured surface, roll out the dough to a thickness of approx. 2 cm. Using a cutter (approx. 6 cm in diameter) or glass, cut out 8 circles. Dust the bread rolls with a little flour, then make little indentations all around with a dough scraper. Transfer the rolls to a tray lined with baking paper.
Bake for approx. 20 mins. in the centre of an oven preheated to 200°C. Leave the bread rolls to cool on a cooling rack.
Mix all the ingredients well.
Combine the bread with all the other ingredients up to and including the pepper and knead well by hand. Divide the mixture into 8 portions and, with wet hands, shape into burgers. Heat the clarified butter in a non-stick frying pan, then reduce the heat. Fry the burgers for approx. 3 mins. on each side.