▢ Take butter, sugar, vanilla in a bowl and cream it well.
▢ Add in flour, salt and mix well. Add in milk and knead it to a soft dough.
▢ Divide it into equal portions. Add cocoa in one dough and knead well.
▢ Now cover the dough with plastic wrap and chill in fridge untill firm.
▢ Take the dough out and cut each one into two portions.
▢ Take one portion and roll it into a rectangle, take each dough and roll it like the same size of the first one.
▢ Now take a vanilla rectangle, brush with little water, place chocolate rectangle on top and brush again with water, place vanilla rectangle over it,
▢ brush with some more water and finally place the chocolate rectangle over it.
▢ Cover the whole thing with plastic wrap and chill untill firm.
▢ Now remove it from fridge, trim the sides, Cut into four equal portions.
▢ Take one strip and brush with water, place another strip, make sure the alternate colours are stacked. Repeat this.
▢ Now wrap and chill for 30 mins.
▢ Now cut into squares. Arrange it in baking sheet which is lined with parchment.
▢ Bake this for 15 to 17 mins in a preheated oven at 170 degree C.
▢ Remove it and let it cool.
▢ Store it in a air tight container. Serve with milk.