Mix ingredients and knead into a firm dough.
Shape the dough into long sausages (diameter approx. 5-6cm) and brush with egg yolk.
Bake at 175 °C for half an hour and then cut into slices about 2 cm thick.
Bake again for about 5-10 minutes.
Leave to cool.
Serve with a good “Vinsanto” for dessert.