In a large bowl, whisk together the flour, cinnamon, lemon zest, sugar, and salt. Add in the cubes of butter and toss in the dry ingredients to coat. Using your fingertips, rub the butter into the flour until you’re left with mostly pea sized chunks of butter covered in flour. Using a knife, stir in the vodka and the apple cider vinegar. Add in the ice water 1-2 Tbsp at a time, stirring with the knife until big chunks start to form. Using your hands, form the dough into a ball (if there are still dry bits, sprinkle a little bit of water over them until you can pull all the dough together). Flatten into a disc and wrap tightly in plastic wrap. Chill in the refrigerator for 30 minutes to 1 hour.