Every summer, just as the fireweed starts painting the roadsides in shades of pink, I gather a basket and head out to harvest for one of my favorite summer preserving projects: fermented fireweed tea. In our modern world, it’s a beautiful link to the past, known traditionally as Ivan Chai or Koporye Tea. This Russian fireweed tea has a long history stretching back to ancient times across the Northern Hemisphere, especially in Russia. It’s naturally caffeine-free and full of minerals that are wonderful for the immune system. The fermentation process is simple, slow, and incredibly rewarding. If you’re a visual learner, you can also watch my full step-by-step video on how to make Ivan Chai here!
If this is your first time making a fermented tea, don’t worry—this is one of those old-fashioned methods that doesn’t need a lot of fancy equipment. It’s very forgiving, and it’s a lovely way to bring a bit of wildness into your pantry.
What You’ll Need:
A clean basket or bowl for collecting fireweed
A clean tea towel or pillowcase for withering
A glass or ceramic bowl for fermenting
A dehydrator, low oven, or even a screen for drying the leaves
A tea strainer for brewing
Airtight glass jars for storing the finished tea
Step 1: Harvesting Fireweed
The first step is to properly identify and harvest your fireweed. The plant’s scientific name is Chamaenerion angustifolium (sometimes seen as Epilobium angustifolium), but it’s also commonly known as rosebay willowherb. Interestingly, these are often the first plants to regenerate after forest fires. Look for fireweed that’s in full bloom but not yet gone to seed. You’ll want to harvest the younger leaves of rosebay willowherb—the ones closer to the middle of the plant are ideal. I try to avoid roadside plants to reduce exposure to dust or chemicals. Always forage responsibly: take only what you need, and leave plenty for the pollinators and for reseeding.
To harvest, simply pinch off the leaves as you move up the stalk. You don’t need the flowers for this traditional tea (though I do sometimes dry them separately for a pretty touch in other herbal blends).
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Step 2: Withering the Leaves
Spread the leaves out on a clean tea towel or pillowcase in a single layer. Let them sit in a shaded spot away from direct sunlight, but with good ventilation, for about 12–18 hours. You want them to wilt a bit—like a spring salad that’s been left on the counter too long. They should be soft and pliable but not crispy.
Step 3: Rolling and Bruising
This is the fun part and the most important next step. Take a small handful of withered leaves and roll them between your palms into a tight rope. The goal here is to bruise and break down the leaf tissues to release the natural juices—this is what triggers the fermentation. You’ll know it’s working when the rolled leaves start smelling sweet and grassy.
You can also roll them using a rolling pin or even lightly crush them in a food processor with the dough blade, but I tend to just do it by hand—it’s meditative and satisfying.
Step 4: Fermentation
Once your leaves are bruised and fragrant, pack the rolled leaves into a clean glass or ceramic bowl. Cover with a slightly damp tea towel and let them sit at room temperature for about 24–48 hours. The damp towel helps prevent the top layer from drying out while still allowing the process to occur in an aerobic environment.
The time will vary depending on your house temperature, but you’ll know the tea is ready when the leaves darken significantly and take on a fruity, almost floral scent. If you notice any off smells, toss it and start over—but in all the years I’ve made Ivan Tea, that’s only happened once.
Step 5: Drying
Spread the fermented leaves out on a dehydrator tray or baking sheet. Dry them at the lowest setting (95–115°F) until they’re completely dry and crisp, much like you would for black tea leaves. If you’re using an oven, leave the door cracked open a bit to allow moisture to escape.
Once dry, you can store the tea as-is or crumble the dried leaves gently for a more traditional loose-leaf texture.
Step 6: Curing (Optional, but Worth It)
Like a good homemade wine or cheese, this herbal tea benefits from a bit of aging. Store your dried tea in sealed glass jars in a cool, dry place and let it mellow for 2–4 weeks. The flavor deepens and smooths out beautifully over time.
How to Brew
To brew, use about 1 teaspoon of your finished fireweed tea per cup of water. Steep in hot (but not boiling) water for 10–15 minutes. It has a naturally sweet, slightly earthy flavor with floral notes. I like it plain, but it’s also lovely with a little honey or blended with dried berries or mint, according to your own preference. It’s especially comforting on cold days!
Watch the Process from Start to Finish!
Reading the steps is one thing, but seeing it all come together can make the process even clearer. Here is the full video of me harvesting, processing, and brewing this beautiful fireweed tea.
FAQ & Troubleshooting
What is Ivan Chai?
Ivan Chai is the Russian name for a traditional fermented herbal tea made from the leaves of the fireweed plant. It is also known as Koporye Tea or rosebay willowherb tea.
What are the benefits of the plant?
Traditionally, fireweed has been valued for its anti-inflammatory properties and high mineral content. Many people drink it to support their digestive health and immune system. The benefits of the plant are most accessible after it has been fermented and dried.
Why are my leaves not darkening during fermentation?
This usually means the leaf tissues weren’t bruised enough in the rolling step. You really want to make sure the leaves are well-crushed to release their juices. Also, ensure you’re maintaining a moist, aerobic environment by using a slightly damp cloth to cover the bowl.
How should I store the finished tea?
Once the dried leaves are finished curing, store them in airtight glass jars in a cool, dry place away from direct sunlight to preserve their flavor and aroma for up to a year.
Conclusion
Making fireweed tea is one of those slow, seasonal projects that feels like it ties you to the land and the rhythm of summer, especially here in North America. It’s a simple process, but each step invites you to slow down and really pay attention—which, honestly, is something I think most of us could use a little more of.
If you decide to give it a try, I’d love to hear how it turns out. And if you already make your own version, let me know what your process looks like. This is one of those traditions that’s meant to be shared.
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Chelsea