Mix flour, salt, melted butter and water together. Rest dough overnight in fridge.
Roll out into rectangle and place folding butter in center.
Make 3X Double Fold and 1X single. Rest in Fridge for another half day.
Roll out onto a tray with 2mn Thickness
Bake 180C for first 10 minutes then press it flat around 1cm thickness.
Bake again with open trigger oven for around 25 mins till golden brown.
Shieve a hin layer on the surface and bake again for 3 mins 210c for caramel color