Combine flour, cocao, icing sugar, salt and butter in a bowl. Add the wine in portions until soft, but not too soft and also not too sticky.
Knead for 5-10 minutes and make a disc type round of dough and let it rest in the fridge for 1 h
Meanwhile make preparations for the filling (see below)
On a flour dusted board or counter, take a third of the dough and use a dough pin to make a thin layer. Then fold it and roll it again. Do this 8 times
Then roll it to a very thin layer of dough and stance out rounds of 9-10 cm in diameter
Meanwhile fill a pan with 5 cm of oil and heat it up to about 180 C
Wrap the dough circles around the moulds and use the egg white to glue the dough
Immerse the dough wrapped moulds in the oil, until the dough is colored
Take them out and let cool down and drip on a kitchen towel
meanwhile repeat with the other dough and dough circles