Puts the sugar and milk and stir to dissolve. Flour and cocoa are mixed and diluted with milk. Put it on the fire to boil and stir constantly until thickened. Remove from heat and add the crushed biscuits, vanilla and rum. Stir nice and leave it to cool a little. Take a little of the mixture and put in 2-3 bowls and pour the entire mixture into a large bowl and is formed on the walls as well. Leave in the refrigerator one night to be tight. Then carefully removed and filled with chopped fruit (bananas, apples, pears, plums, peaches, oranges, etc.). The seeds are cleaned and their sheet is peeled. Sprinkle with powdered sugar. Optional can be topped with whipped cream and strawberries, raspberries and blueberries.