Line 2 baking trays with greaseproof/parchment paper.
Combine the salt and sugar in a small bowl and stir to combine.
200 g sugar, 1 pinch salt
Pour ¼ of the mixture over a large chopping board or clean dry surface.
Lay one piece of all butter puff pastry onto the sugar/salt mixture and press in so the sugar becomes embedded into the pastry. Add another ¼ of the sugar salt mixture to the top on the pastry and using a rolling pin roll the pastry until its approximately 12 – 13 inches square.
2 sheets all butter puff pastry
Fold opposite sides of the square towards the middle so they meet but not overlap.
Again, fold the opposite side together to meet in the middle but not overlap.
Then fold one half over the other half reducing the width by half.
Slice the dough into 1 ¼ cm - 1/2-inch-wide pieces and lay them on the prepared baking tray.
Repeat the process with the second sheet of all butter puff pastry.
When ready place the baking trays in the preheated oven and bake for 5 minutes or until they turn a light golden brown and become caramelised.
Remove from the oven, flip them over and bake for a further 3 minutes until the a caramelised on the second side.
Remove from the oven and transfer to a wire rack to full cool before eating.