Our Lemon Ginger Birch Brew starts with raw, 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 and organic ginger juice add bright citrus and a clean, warming bite to Birch Brew’s naturally tart, crisp, and refreshing finish. Wild fermented. Zero sugar. Billions of living cultures. Never pasteurized. 11.2 fl oz bottle.