Start by mixing in a bowl the warm milk with the yeast and 1 tbsp. sugar substitute. Set aside for 10 minutes.
In a large bowl, beat the sugar substitute with the butter with the mixer. Add the eggs one by one and the vanilla. Add the zest.
Ρίξε σιγά-σιγά το αλεύρι και χτύπα ταυτόχρονα. Πρόσθεσε και το αλάτι. Ρίξε μέσα το μείγμα της μαγιάς και το ανθρακούχο νερό και ανακάτεψε με κουτάλι αυτή τη φορά.
You want to form a non-sticky dough. So add a little more flour if needed.
Oil a bowl and put the dough in it. Cover it and put it in a warm place for 2 hours.
Uncover, open the dough slightly and pour in the raisins and cranberries. Close the dough and this time put it in the pan where you will bake it.
Cover the pan and put it again in a warm place for another 1-2 hours.
Preheat the oven to 180C and bake for 40 minutes. If the top starts to seize, cover the panettone and continue baking.
Let the panettone cool slightly before removing it from the pan and cutting it.