-
In a food processor, grind the biscuits to a powder.
-
Add coconut, sugar, cocoa and rum. Slowly add a few tablespoons of coffee, little at a time, to form a pliable dough (the dough should not be too moist). Put the dough on a table (or a counter) covered with plastic foil.
-
For the FILLING, beat butter with mixer until fluffy. Add powdered sugar and beat some more until sugar is dissolved.
-
Roll the coconut dough into a rectangle, about 1 cm (1/3 inch) thick. Spread the butter mixture all over. Slowly roll the rectangle to form a roll. Sprinkle with some dessicated coconut (optional). Wrap the roll in a cling film and refrigerate it over night. After it is set, remove the foil and slice with a knife into 1/2 inch thickness pieces. Serve with whipped cream.