Add the berries, syrup, salt and vodka, if using, to a high-speed blender. Pulse the mixture to create a coarse puree. Scrape down the sides of the blender with a rubber spatula. Continue to pulse, scraping down the sides as needed, until smooth and scoop-able. Enjoy immediately or store in the freezer in an airtight container.
If you wish to make this sorbetto ahead of time, the addition of the vodka to the puree helps the sorbetto keep a scoopable texture.