Our Lemon Birch Brew starts with certified organic birch sap, wild-harvested from Alaska’s boreal forests and fermented in small batches using our traditional double-fermentation process. Organic lemon juice adds a bright, citrusy edge to Birch Brew’s naturally tart, crisp, and refreshing finish. Wild fermented. Zero sugar. Billions of living cultures. Made with organic ingredients and never pasteurized. 11.2 fl oz bottle.