This Freezer Martini served at The Butterscotch Den in Sacramento is the bar’s top-selling drink. With a lower ABV than other freezer-stored Martinis, the mixture may potentially freeze solid (depending on your freezer settings). Be sure to leave some extra room at the top of the bottle for the liquid to expand—and should the bottle freeze, place it in the refrigerator until it loosens up, and give it a good shake before serving.