Dh and I have been on three cruises and love that drink. I don't know what Palo calls it, but we found a recipe for Sgroppino that is just like it.
1 large scoop lemon sorbet
0.5 oz vodka (we keep it in the freezer)
0.25 oz Limoncello (lemon liqueur - kept in the freezer as well)
2 oz Prosecco (Italian sparkling wine - chilled in fridge)
Use a blender to mix together.
This makes a small amount, so multiply by how many drinks you want. DH doesn't even measure anymore. Just pours. Experiment a little. It may take more sorbet to get the thickness you want, more or less vodka/prosecco, etc. Different brands of sorbet can have different intensities/pucker powers. Find your favorite. The local liquor store also carries Orangecello. Haven't tried that with orange sorbet, but I'm sure it would be just as good. Our friends have been on 9 cruises and got us hooked on
DCL. We have dinners at their house and make a whole blender full. YUM!! Memories of Palo.
Kris