Truly Hard Seltzer, a brand of The Boston Beer Co., Boston, announced the launch of the brand’s first spirits-based seltzer, Truly Vodka Seltzer. Made with six-times-distilled premium vodka and real fruit juice, Truly Vodka Seltzer will be available nationally in four flavors: Blackberry & Lemon, Cherry & Lime, Pineapple & Cranberry, and Peach & Tangerine.