Sustainability & Stewardship

The Forest Is the Foundation

Everything we make begins with the Alaska boreal forest. Our business depends on healthy birch trees returning each spring, so caring for the forest isn't separate from what we do. It's essential to the future of Kahiltna Birchworks.

We harvest from living trees that remain standing year after year, tapping mature trees during a brief spring season, removing the taps when the harvest ends, and returning to the same forests in future years.

Our approach is rooted in regenerative thinking. Rather than extracting a resource and moving on, we depend on the continued health of the same living forest over decades, and our goal is to harvest thoughtfully, reduce our impact, and leave healthy birch forests for the generations that follow.

White buckets for collecting birch sap attached to a birch tree with yellow flowers around

A Smaller Tap, A Lighter Touch

Responsible harvesting begins with the tree. We use a 5/16 inch tap rather than the larger 7/16 inch taps traditionally used in syrup production, creating a smaller opening while still collecting the sap we need, and only one tap per tree. When the harvest ends, the taps are removed and the holes heal naturally, so the tree keeps growing and can be tapped again in future seasons.

How the sap moves matters too. Traditional bucket collection sends workers tree to tree, often on snowmachines or six wheelers, across an extensive network of trails. Instead, we use an automated tubing and vacuum system that carries sap from thousands of trees to centralized collection points, concentrating our access to a limited number of routes. That means less vehicle traffic, less fuel, and less disturbance to the forest floor, and it lets us collect sap quickly, preserving a resource that begins changing almost as soon as it leaves the tree.

We also work within the forest's calendar rather than our own. Every spring is different, as snowpack, temperature, freeze and thaw cycles, and the timing of the season all shape when the sap moves and how long the harvest lasts. Birch sap flows for only a few weeks, and when the trees begin to leaf out and the sap changes, the harvest ends. We get one harvest each year, and the forest sets the calendar.

A close-up outdoor shot of a clear plastic birch sap collection tube inserted into a birch tree trunk, with bark texture and lichen visible against a pale sky background.

Using Less Energy to Make Birch Syrup

Fresh birch sap is roughly 1% sugar, and it takes at least 110 gallons to make a single gallon of syrup. Removing that much water takes significant energy, so improving the efficiency of our process is one of the most important ways we reduce our footprint. Before the sap reaches the evaporator, we run it through reverse osmosis, which removes much of the water mechanically before any cooking begins. That sharply reduces how long the evaporator runs and how much fuel we burn, and it lets us concentrate the sap more gently, preserving the complex flavors that make birch syrup unique.

We've also changed how often we cook. Rather than running the evaporator every day, we concentrate sap between cooks and combine production into larger batches every three to five days. Fewer individual cooks means less operating time and less fuel. For us, sustainability often lives in these operational choices: smaller taps, fewer trails, fewer vehicle trips, more efficient concentration, and fewer hours running the evaporator.

A close-up shot of a dark brown liquid that is birch sap in the process of being made into birch syrup being poured into a metal pot with active foam and bubbles on the surface.

Using More of the Harvest

Pure birch syrup remains at the heart of Kahiltna Birchworks, but good stewardship also means finding thoughtful ways to use more of what the tree gives us. Not all birch sap needs to become syrup.

Through HFBirch, we're developing products like Birch Brew, our fermented birch sap beverage, and continuing to explore new uses for Alaska birch sap. Creating more value from the same seasonal resource lets us grow without producing more syrup or putting more pressure on the forest.

Two glass bottles of raspberry fermenter birch brew, a birch sap beverage, with purple labels on a stainless steel conveyor belt in a factory setting, with empty glass bottles lined up on the left and a worker blurred in the background.

Respect for the Land

Kahiltna Birchworks operates in the Talkeetna area on the ancestral and traditional lands of the Dena'ina people, including the Dghelay Teht'ana, the Mountain People. For thousands of years, Dena'ina people have lived with, traveled through, harvested from, and cared for these lands and waters. The traditional Dena'ina name K'dalkitnu has been translated as "food is stored river" or "river of plenty," reflecting the abundance of a landscape that has sustained people for generations. We recognize that our work today takes place within that much longer history.

We acknowledge and honor the enduring presence, knowledge, and stewardship of Dena'ina people and Alaska Native peoples more broadly. We also recognize that a land acknowledgment has meaning only when it is reflected in how we act. For us, that means approaching the harvest with respect, reducing our impact on the forest, caring for the trees we depend on, and continually improving how we use what the land provides. Our goal is not simply to harvest from this place, but to remain in relationship with it. We are grateful for the opportunity to work in these birch forests, and we accept the responsibility that comes with it.

Alaska river system with ice and snow in a vast landscape under a clear blue sky.
Aerial view of a Alaska river winding through a forest with snow-capped mountains in the background.

Stewardship for the Next Generation

Kahiltna Birchworks has been harvesting birch in Alaska since 1990. We think of birch as a renewable relationship rather than a one time harvest. The trees remain standing, the forest keeps growing, and each spring the sap runs again.

Our responsibility now is to make sure our harvesting and production evolve in ways that let that cycle continue, caring for the trees, reducing our impact in the woods, using energy more efficiently, and making thoughtful use of the harvest. We don't expect that work to ever be finished. The forest has sustained this company for more than three decades. Our job is to return the favor.

Learn How Birch Syrup Is Made Shop Alaska Birch Syrup