Birch Brew begins with raw, certified organic birch sap harvested each spring from Alaska’s boreal forests. Clear and delicate straight from the tree, the sap becomes something completely different through fermentation.

Inspired by fermented birch beverages traditionally enjoyed across Latvia and Northern Europe, we wild-ferment the sap in small batches using a double-fermentation process. The result is tart, crisp and naturally effervescent, with billions of living cultures and the distinctive character of fermented birch sap.

During the second fermentation, a small amount of organic sugar is added to fuel the process. The cultures ferment that sugar out as Birch Brew develops its natural carbonation and acidity, leaving zero sugar in the finished beverage.

Our flavored Brews are finished with simple, high-quality organic ingredients including lemon juice, ginger juice and raspberry purée. No artificial sweeteners. No preservatives. No forced carbonation.

Birch Brew is non-alcoholic, zero sugar, and made from raw certified organic birch sap harvested straight from the tree. Its foundation is remarkably simple: birch sap, fermentation, and real organic ingredients. No artificial sweeteners. No preservatives. Just a tart, crisp, naturally effervescent expression of Alaska’s boreal forest.

• Raw, certified organic Alaska birch sap

Wild-harvested each spring from Alaska’s boreal forests.

• Wild + double fermented

A slow fermentation inspired by traditional northern birch beverages.

• Zero sugar

Sugar fuels fermentation but is fermented out, leaving zero sugar in the finished Brew.

• Billions of living cultures

Naturally developed through fermentation.

• Naturally effervescent

Carbonation develops through fermentation — never forced.

• Real organic ingredients

Organic lemon juice, ginger juice and raspberry purée bring each flavor to life.

• Non-alcoholic

A complex, tart alternative when you want something more interesting than soda, kombucha, or sparkling water.