How to cook
Crumble the biscuits in a cake form and leave it aside.
In the meantime, prepare the strawberry starch as directed on the packet, sweeten with sugar to taste. Pour the prepared starch in the form with the biscuits and arrange the rolls vertically.
Make the banana starch the same way and pour it carefully into the form, using a spoon to help you so you don't knock the rolls over.
Optionally, you can add extra biscuits between the rolls and then pour in the 2nd starch. Put it in the fridge to harden.
Once hardened, heat the walls of the form a bit in order to take it out.