What makes birch special?
Birch Sap: Straight from the Tree
Each spring, birch trees draw water and nutrients from the forest floor as sap begins moving through the tree. Fresh birch sap is clear, delicate, and naturally contains minerals, electrolytes, amino acids, and other plant compounds.
Its mineral profile includes naturally occurring potassium, calcium, magnesium, manganese, and other trace minerals. That combination has made birch sap a traditional spring beverage across Northern Europe and other northern cultures for centuries.
At Hammers Family Birch, this raw certified organic Alaska birch sap is the foundation of Birch Brew. Rather than pasteurizing it or concentrating it with heat, we preserve the sap in a very different way: through fermentation.
Birch sap has been consumed for generations across Northern Europe and other northern cultures as a traditional spring time tonic. Along with naturally occurring minerals and electrolytes, it contains amino acids, organic acids, and other plant compounds that have attracted increasing scientific interest. Its delicate composition reflects the nutrients moving through the tree each spring and provides the unique starting point for our wild fermentation process.
Gut Health Support Through Natural Fermentation
Birch Brew takes the natural qualities of birch sap a step further through fermentation. Our wild fermentation develops a diverse community of living cultures along with the organic acids responsible for Birch Brew’s distinctive tart flavor.
The result is a naturally effervescent, zero-sugar fermented beverage containing billions of living cultures. These cultures are part of why fermented foods have long been associated with supporting a healthy and diverse gut microbiome.
Our process is intentionally simple: raw organic birch sap, wild fermentation, and high-quality organic ingredients. No artificial sweeteners, preservatives, or forced carbonation.
Fermentation does more than create Birch Brew’s tart flavor and natural effervescence. As the cultures metabolize sugars, they produce organic acids and other fermentation compounds while the beverage develops its diverse community of living cultures. The finished Brew contains billions of living cultures and zero sugar, offering a naturally fermented way to support a healthy gut microbiome.
Wild Alaska Chaga
Chaga is a slow-growing fungus found on birch trees throughout northern forests and has a long history of traditional use across Siberia, Northern Europe, and other boreal regions.
Chaga naturally contains a complex mixture of compounds including beta-glucans, polyphenols, melanin, and triterpenes derived in part from its relationship with the birch tree. These compounds have made chaga an active area of scientific research and an enduring part of traditional northern herbal practices.
We sustainably harvest wild Alaska chaga in small quantities and use it to craft our chaga teas and extracts.
More Than Sap
Across northern cultures, birch has long been valued far beyond its sap. Bark, leaves, wood, and fungi associated with the tree have all played crucial roles in food, craft, shelter, and traditional preparations.
That relationship is part of what fascinates us about birch. It isn't simply an ingredient — it's a defining species of the boreal forest and a tree that has supported northern communities for generations.
Synergy of the Forest
Everything we make begins with the birch forest.
For thousands of years, northern peoples have lived in close relationship with the boreal forest, relying on birch for nourishment, craft, and traditional preparations. That forest-to-body connection still matters today.
The same trees provide the raw sap we ferment into Birch Brew and concentrate into birch syrup, while also supporting chaga and the larger boreal ecosystem. Each product represents a different way of working with one remarkable northern tree.
Our work is about carrying that relationship forward — combining traditional knowledge, modern food science, fermentation, craft, and careful stewardship without losing sight of where it all begins: the forest.