Recipe courtesy of Campari.
350g puff pastry
1 egg yolk
Beat the egg yolk in a bowl using a whisk until frothy. Put to one side.
Roll out the pastry dough using a rolling pin. Then, using knife, divide into eight equal rectangular pieces. Spread the gorgonzola evenly over one half of each of the rectangles then close, folding the other half over. Press the edges firmly together, moistening