On a floured work surface roll out the puff pastry into two 10-inch (25 cm) squares (or use pre-rolled puff pastry). With a 2-inch (5 cm) cookie cutter, cut 32 discs of dough. With a round 1 1/2-inch (3 cm) cookie cutter, cut out and discard the centre of 16 of the discs to obtain dough rings.