
Chaga mushrooms, often referred to as the King of Medicinal Mushrooms, are a unique fungus that grows on birch trees in cold climates, such as Siberia, Alaska, and Northern Canada. They are known for their purported health benefits, including boosting immunity, supporting digestion, and promoting healthy skin. Chaga is also rich in antioxidants, high in fibre, and studies suggest it lowers long-term inflammation. Chaga mushrooms can be prepared in various ways, including tea, tinctures, coffee, and smoothies. To prepare Chaga mushrooms for tea, the mushrooms are typically cleaned, dried, and ground into a powder, which is then steeped in hot water. Honey or maple syrup can be added to sweeten the tea. Alternatively, the mushrooms can be chopped into small chunks and simmered in water for an hour before serving.
| Characteristics | Values |
|---|---|
| Scientific name | Inonotus obliquus |
| Appearance | Dark brown to black outer crust, light brown inside |
| Texture | Rock-hard |
| Harvesting season | Late fall to early spring, especially winter |
| Harvesting location | Mature birch forests in the northern hemisphere |
| Harvesting tools | Hammer, chisel, handheld saw, sharp hatchet |
| Cleaning | Wash with warm water and a soft cloth or brush |
| Drying | Air dry for 6-8 weeks in the sun or in an oven at 50 °C (122 °F) for 8 hours |
| Grinding | Use a coffee grinder, blender, or mortar and pestle |
| Storage | Spread powder on a cookie sheet for a few days |
| Tea preparation | Simmer chunks in water for an hour, or steep 1/2-1 tablespoon in boiling water for 10 minutes |
| Tea additives | Honey, maple syrup, cinnamon, ginger, almond milk |
| Other uses | Tinctures, capsules, coffee, smoothies, broth |
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What You'll Learn

Where to find chaga mushrooms
Chaga mushrooms are found almost exclusively on birch trees in the northern hemisphere. They are a parasitic fungus, and derive their energy from host birch trees by collecting bioactive materials found in their bark, such as betulinic acid. Chaga is typically found growing on the trunks of mature birch trees, and appears as a rough-looking, blackened mass, usually in a dome or cone-like shape. It has a craggy and uneven surface, often resembling cracked bark or a lumpy, knobby mass. Chaga can be as small as a walnut or as large as a basketball.
Chaga is easy to identify, and does not have any poisonous look-alikes. However, burls (deformed tree growths) can look similar to chaga, so it's important to know what to look for. The outward appearance and texture of chaga are blackened, charred, and hard, but the inside has a softer texture and a golden or amber hue. This soft, amber-coloured interior is the most obvious way to distinguish chaga from a burl. Chaga is also sometimes found on other hardwood trees, but if the growth is on something other than a birch tree, it's unlikely to be chaga.
If you live in the northern hemisphere and have birch trees in your area, you may be able to find chaga in your neighbouring forests. The best time to look is in the winter, as it's easy to spot against the snow. However, it's important to note that overharvesting has become a concern in some parts of the world, so if you do go foraging for chaga, be sure to only take what you need and leave at least one-third of the chaga behind.
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How to harvest chaga mushrooms
Chaga mushrooms are parasitic fungi that grow on birch trees in cold climates, such as those in Canada, Siberia, Scandinavia, and some parts of the United States. They are prized for their medicinal properties and have been used for centuries by Siberian and North American Native American peoples.
Chaga mushrooms do not grow on the forest floor like most mushrooms. Instead, they appear on birch trees as hard, sharp-edged, black charcoal-like masses called "conks" with a woody, orange interior. They can be found high up in the tree, sometimes 20-40 feet above the ground.
When harvesting chaga mushrooms, it is important to only take what you need and to leave enough behind for the ecosystem to recover. Chaga mushrooms are slow-growing, so it is recommended to only harvest from larger mushrooms, leaving smaller ones to grow. It is also important to harvest with care so as not to damage the host tree, which can leave it susceptible to infections. One source recommends leaving at least 20-30% of the chaga intact on the tree, while another suggests leaving 1-2 inches behind so that the tree remains protected and the chaga can regrow.
To harvest chaga mushrooms, you will need tools such as a sharp hatchet, saw, cement chisel, or mallet, as they are difficult to remove by hand. Cut or pry the chaga from the tree, being careful not to remove any tree bark.
After harvesting, it is important to process the chaga right away. Freshly foraged chaga is susceptible to mould, so it should be dried immediately or put into a deep freezer for later drying and processing. Cut the chaga into small pieces, then dry them in a warm, dry, well-ventilated place until they become hard and crumbly. A commercial food dehydrator can be useful for this purpose.
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Preparing chaga mushrooms for tea
Chaga mushrooms (Inonotus obliquus) are parasitic fungi that grow on birch trees in temperate and boreal forests worldwide. They have been consumed for their health and medicinal properties for centuries, and are particularly popular in Siberia and among Native Americans in North America.
Chaga tea has an earthy taste with a slight bitterness. It is rich in antioxidants and contains nutrients such as calcium, silicon, iron, magnesium, zinc, copper, aluminium, phosphorus, and sulfur.
If you live in a region where chaga grows, such as New England, Canada, Maine, or Siberia, you can harvest the mushrooms yourself. Look for black, rock-hard growths protruding from birch trees. Once harvested, you will need to clean the mushrooms by removing any impurities, such as pieces of bark, bugs, or pollen. You can use a brush or a knife to do this, being careful not to remove the dark outer crust.
To prepare the chaga mushrooms for tea, you can break them into smaller pieces using a hammer, small axe, or chisel and mallet. The recommended size of the chunks varies from half an inch to one inch. You can then dry the chunks using a food dehydrator or by placing them in a warm, dry, and well-ventilated area until they become hard and crumbly. It is important not to use a hot oven, as this can strip the mushrooms of their nutrients. Once dried, you can store the chaga chunks as they are or break them up into smaller pieces.
To make chaga tea, you can use either the chunks or powder the chunks and use a tea bag. If using chunks, place them in a sturdy vessel, such as a metal teapot or pan. Fill the vessel with water and heat it to between 140 F and 160 F—below boiling temperature. Simmer the chaga for a minimum of 45 minutes, stirring occasionally. Longer steeping times will result in a richer tea. You can also add flavourings such as cinnamon, maple syrup, honey, or milk to enhance the taste. Remember to strain the tea before drinking to remove the chaga chunks.
Alternatively, if you are using a tea bag or powder, you only need to heat enough water for one mug. You can also use an Instant Pot pressure cooker to make chaga tea. Simply add the ground chaga, water, and any desired flavourings, such as cinnamon, to the pot and cook at low pressure for 45 minutes.
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Making chaga coffee
Chaga mushrooms are large fungi that usually grow on birch trees in Russia, Canada, Europe, Korea, and the United States. They are often consumed as tea or tinctures, but they can also be used to make coffee. Here is a step-by-step guide on how to make chaga coffee:
Step 1: Harvesting and Cleaning
Chaga mushrooms can be harvested from mature birch trees in the northern hemisphere during the winter. The outside of the mushroom has a blackened charcoal appearance, while the inside is light brown. Use a chisel or handheld saw to remove the outer black crust, which can be discarded or used as tinder. Clean the mushrooms by gently wiping them with a damp cloth or soft brush to remove any dirt or debris.
Step 2: Drying
Place the cleaned mushrooms on a baking tray, ensuring they are not overlapping, and dry them for 6 to 8 weeks in a cool, dry, and sunny spot. Alternatively, for a faster method, preheat your oven to 50°C (122°F) and put the mushrooms in for about 8 hours until they are completely dried. It is important to monitor the mushrooms during the drying process to prevent burning or mould formation.
Step 3: Grinding
Once the mushrooms are fully dried, use a coffee grinder, blender, or mortar and pestle to grind them into a fine powder. This step increases the surface exposure and potency of the chaga. Ensure that the mushrooms are completely dry before grinding to prevent mould.
Step 4: Brewing
Mix the chaga powder with your favourite coffee blend, following the usual brewing instructions. You can experiment with different ratios of chaga powder to coffee to find your preferred taste and consistency.
Step 5: Serving
Serve your chaga coffee hot and freshly brewed. You can add milk, honey, cinnamon, or other sweeteners to enhance the flavour and create a delightful, nourishing beverage with the added health benefits of chaga mushrooms. Enjoy your healthy and unique cup of chaga coffee!
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Chaga mushroom side effects
Chaga mushrooms (Inonotus obliquus) are medicinal mushrooms that grow on birch trees in the northern hemisphere. They have been used for centuries in Siberia, North America, and Northern Europe for their health benefits. Chaga mushrooms are typically consumed as a tea or supplement and are known for their high antioxidant content and various health benefits. However, despite their popularity and purported benefits, there are some side effects and precautions to be aware of when consuming Chaga mushrooms.
Firstly, Chaga mushrooms contain a chemical called oxalate, which can damage the kidneys when consumed in high doses over a long period. There has been a documented case of Oxalate Nephropathy in a 72-year-old Japanese woman who was already suffering from liver cancer, which was suspected to be exacerbated by overconsumption of Chaga powder. Consistent overconsumption of Chaga's rich natural minerals, such as potassium and magnesium, may also overburden the kidneys and lead to kidney or liver damage or disease. Therefore, it is essential to follow proper mushroom dosage guidelines and not exceed the recommended daily intake.
Secondly, Chaga mushrooms may affect blood sugar levels and could be dangerous for individuals with diabetes. Laboratory studies suggest that Chaga may lower blood sugar, which can cause additional effects in individuals already taking diabetic medications. While one person with type 1 diabetes reported no noticeable impact on their glucose levels, more controlled studies are needed to understand Chaga's effect on blood glucose fully.
Thirdly, Chaga mushrooms may not be suitable for individuals with certain "auto-immune diseases" such as multiple sclerosis (MS), lupus (SLE), or rheumatoid arthritis (RA). Chaga may stimulate the immune system, increasing its activity and, consequently, the symptoms of these autoimmune diseases. It is recommended that individuals with these conditions avoid using Chaga.
Additionally, Chaga mushrooms may increase the risk of bleeding and could be harmful when taken in combination with surgery. Chaga's blood-thinning properties and suspected vasodilator effects can prevent blood clotting and open blood vessels. Therefore, it may increase the risk of bleeding during and after surgery.
Lastly, while rare, Chaga mushrooms could trigger an allergic reaction in some individuals. Symptoms such as trouble breathing, changes in heart rate, and loss of consciousness are medical emergencies and require immediate attention. It is always advisable to consult a healthcare professional before incorporating Chaga mushrooms or any herbal teas into your diet, especially if you are pregnant or breastfeeding or have existing medical conditions.
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Frequently asked questions
Chaga mushrooms are parasitic to birch trees in temperate and boreal forests worldwide. They can be found in the northern hemisphere, in places like Siberia, Alaska, Northern Canada, Russia, Europe, Korea, and the United States.
Chaga mushrooms can be found year-round, but the best time to harvest them is during the winter. This is because they are easier to spot against the snow, and it's also believed that nutrient and enzyme levels are at their peak during this time.
First, clean the mushrooms with a soft brush or cloth, removing any large dirt or debris. Then, cut off the black outer crust, as it doesn't contain all the nutritional value of the light brown inside. Next, cut the mushrooms into small pieces and dry them in a sunny spot for 6-8 weeks, or in the oven at 50°C (122°F) for about 8 hours. Finally, grind the dried pieces into a fine powder using a coffee grinder or blender. To make the tea, add about 1 tablespoon (or 1 teaspoon) of the powder to a cup of boiling water and let it steep for 10 minutes. You can add honey, maple syrup, cinnamon, or other sweeteners to taste.
Chaga mushrooms are high in oxalates, so they may not be suitable for people with certain medical conditions. Always consult a medical professional if you're unsure.
Yes, chaga mushrooms can also be consumed in the form of tinctures, coffee, smoothies, and broth. Tinctures involve adding the mushroom powder directly to alcohol. For chaga coffee, simply mix the powder with your favourite coffee blend and brew as usual. For a smoothie, blend the powder with your favourite fruits, vegetables, and protein sources. To make broth, add chaga to soups or stews for a subtle earthy flavour.

























