Use a bowl, to beat the butter, salt and icing sugar together. Beat on a medium speed for up to 5min or until it is fluffy and well beaten together.

Lower the mixing speed to add the cocoa powder gradually. Then increase the speed again to beat well or until it is soft and fluffy.

Next, add the vanilla and mix until well incorporated. The milk is added last, gradually, to balance the consistency of the buttercream.

Use a bowl to add the warm milk and Nescafe together and mix until is it well incorporated.

Gather the marie buiscuits, the prepared milk, and the chocolate buttercream.

Prepare a freezer-safe container by lining with parchment paper. Then spread a thin layer of chocolate buttercream first.

Next, soak a few marie biscuit in the warm milk for about 3-5 seconds (If soaked for too long the marie biscuit will be way too soggy to work with). Place the soaked marie biscuit flat on a single layer over the buttercream spread.

Once the first layer is complete, spread a layer of the chocolate buttercream on top. Followed by another single layer of milk-soaked marie biscuit and then again spread a layer of chocolate buttercream over it.

Continue up to a few layers. Ending it with the layer of chocolate buttercream spread.

You may add any toppings you wish. For example, sprinkle mini chocolate chips, shaved dark chocolates, or sprinkle some chopped dried fruit and nuts.

Now, all there is to do is to freeze it for about 2 hours. When serving, leave it out for few minutes, cut in to slices and serve it cold.