*Note: Some of the alcohol in the Lemoncello will evaporate because it will be added while the Panna Cotta is still hot. To make this completely alcohol free, substitute the Lemoncello with the juice of 1 large or 2 small Lemons. I like to use a mixture of half 70% cacao and half 51% cacao in this recipe, if using only 70% you may need to increase the amount of sugar to ½ cup. By using a mixture of both chocolates, it is the perfect blend of semi-sweet and sweet.