ORIGINAL NEW YORK-SOURCED ORGANIC BIRCH SAP SELTZER A pure sparkling seltzer made with regeneratively harvested organic New York birch sap. Lightly effervescent and naturally refreshing, birch sap from the Northeast has long been valued for its naturally occurring electrolytes, antioxidants, and trace minerals, providing clean hydration straight from the tree. Crisp, subtly sweet, and exceptionally refreshing, it is a sustainable and uniquely New York drink.