Roll out the dough to 60 by 40 cm.
Place a Croissant Butter plate of about 30 by 40 cm and fold so as to create two layers of dough with one layer of butter in between.
Leave to cool in the refrigerator for 1 hours.
Then give 1 fold of 3 and place in the refrigerator again for 1 hour.
Now give 1 fold of 4 rolls and store in the fridge.
Fold the folded dough back open and place the coloured chocolate dough in between.
Fold closed and roll out to 12 mm thickness.
Cut strips 1 cm thick and glue them on top of the dough such that the layers of butter/dough are now facing up.
Put back in the freezer.
Roll out to 3 mm thickness and cut 16 cm by 13 cm rectangles.
Store in the refrigerator.