Prepare the dough using flour, cold water, salt, and butter.
Chill the dough before rolling and laminating.
Roll and fold the dough several times to create thin buttery layers.
Chill the laminated dough until firm.
Roll out the dough and cut into round shapes.
Cut the center from some rounds and place the rings over the base to form the pastry case.
Brush with egg wash and bake until puffed, golden, and crisp.