Mix flour, salt, and soft Crème butter together.
Gradually add in water.
Do not form gluten. Leave for rest overnight in fridge.
Roll out into rectangle and place Croissant butter in center.
Make two single tours and one half tour (book).
Leave to rest in fridge during one hour and laminate at 6mm.
Rest overnight before cut for baked.
Use 4 magnets on the baking tray to adjust the height.
Bake at 170°C for 30 minutes with ventilation + 30 minutes without ventilation.