Soak raisins with the orange juice about 10 minutes.
Dissolve the yeast in the lukewarm milk.
In a large mixing bowl combine the flour and the salt. Add the yeast with the milk. Add the egg and mix with a wooden spoon. Batter should be verry sticky. Dry the raisins and add them to the batter with 1 tbsp orange flavored liqueur. Mix well. Cover and let rest about 30 minutes.
Heat the oil in a large saucepan on high medium heat. Grease well your hands with oil. Take a small piece from the dough with the size of a little apricot. Roll it in a ball and with your finger make a hole in the center. Fry no more than 3 donuts at a time on the both sides. Place on the serving dish covered with a cooking paper and sprinkle with confectioners sugar. Serve warm.