"Smith, 28, and his partner and cousin, Nikita Salmon, also 28, launched Sap! in 2015 with maple sap soda and seltzer made in Vermont. Now the partners hope to pioneer an new category of beverages based on birch, rather than maple sap. Smith says Sap! is breaking new ground with the help of the Heffernans and a couple of neighboring sugarbushes that are supplying the birch sap."