100 g unsalted butter 1 pack Marie biscuit 1 can condensed milk 2 tbsp cocoa powder
Crush the biscuits. Add cocoa powder, butter and condensed milk. Mix well until it turns into a paste. Take an aluminum foil and put the mixture into it. Roll it and keep in the refrigerated for 5 hours. Cut with the foil paper like cutting swiss roll. Serve chilled.