Prepare the dough:

In a large bowl, mix the flour, cocoa powder, and sugar.

Add the liquids:

Incorporate the beaten egg, melted lard, salt, Marsala wine, and white wine vinegar. Mix all the ingredients with your hands until you get a uniform and homogeneous dough. It takes time to knead it well. Then, wrap the dough in plastic wrap and let it rest in the refrigerator for an hour.

Roll out and shape the cannoli:

After the resting time, knead the dough slightly and roll it out with a rolling pin until thin. If you have a pasta machine, use it to get an even thickness. Cut the dough into strips and roll them diagonally around the cannoli molds. Seal the ends with a little beaten egg or water.

Prepare the filling:

In a bowl, mix the ricotta with the sugar and chocolate chips. Let the mixture rest in the refrigerator for at least a day to allow the flavors to blend well.

Fill and decorate:

The next day, place the ricotta mixture in a pastry bag. Fill the cannoli with the ricotta mixture. Decorate the ends with strips of candied orange or ground pistachios. If desired, sprinkle a little powdered sugar over the cannoli before serving.