A double extraction tincture uses both alcohol and hot water to pull out the full range of beneficial compounds from medicinal mushrooms. Neither solvent alone does the job. Alcohol dissolves fat-soluble compounds like triterpenes and sterols, while hot water breaks down the tough chitin cell walls of fungi and releases water-soluble polysaccharides like beta-glucans. Combining both extracts into one tincture gives you the most complete product possible.
Why Two Solvents Are Necessary
Mushrooms are unique among medicinal plants because their active compounds sit on opposite ends of the solubility spectrum. Beta-glucans, the immune-supporting polysaccharides that make reishi, chaga, turkey tail, and lion’s mane popular, dissolve readily in hot water but barely at all in alcohol. Triterpenes, phenolics, ergosterols, and other fat-soluble compounds dissolve well in alcohol but resist water extraction. A standard alcohol-only tincture misses the beta-glucans entirely, and a tea or decoction misses the triterpenes. The double extraction captures both.
Choosing Your Alcohol
High-proof grain alcohol (190 proof, or 95% alcohol by volume) is the standard choice for the alcohol phase. Everclear is the most commonly available brand. The higher the proof, the more efficiently it strips out fat-soluble compounds from the mushroom material. Some recipes call for 80 or 100 proof vodka, but this is largely a matter of availability. In some regions, high-proof grain alcohol is restricted or unavailable, so people substitute what they can get. If you have access to 190 proof, use it for the alcohol extraction stage. You’ll dilute it later when you combine the two extracts.
What You’ll Need
- Dried mushrooms: Reishi, chaga, lion’s mane, turkey tail, or another medicinal species, ground or broken into small pieces
- 190 proof grain alcohol (Everclear or equivalent)
- Filtered water
- Two mason jars (quart size works well)
- A pot for simmering
- Straining tools: Cheesecloth, a French press, muslin bags, or a potato ricer
- Dark glass dropper bottles for storage
Step 1: The Alcohol Extraction
Split your dried mushroom material in half. One half goes into the alcohol extraction, the other half will be used for the water decoction later. Place the first half into a clean mason jar, then pour enough 190 proof alcohol over the mushrooms to cover them by about an inch. You don’t need precise measurements here. The goal is full submersion with some extra liquid above the solids.
Seal the jar tightly and store it in a cool, dark place for a minimum of two weeks. Shake the jar once a day, or at least every few days. This agitation helps the alcohol penetrate the mushroom material more thoroughly. Some people let this stage run four to six weeks for a stronger extraction, but two weeks is the standard baseline.
After the soak is complete, strain the liquid through cheesecloth, a muslin bag, or a French press. A potato ricer works especially well here because you can squeeze out significantly more liquid from the saturated mushroom material than gravity alone would yield. Set this alcohol extract aside in a sealed jar. You can discard the spent mushroom solids from this step.
Step 2: The Hot Water Decoction
Take the second half of your dried mushroom material and place it in a pot with enough filtered water to cover it generously. Bring the water to a gentle simmer, not a rolling boil. You want sustained heat to break down the chitin cell walls and release polysaccharides, but aggressive boiling can degrade some of the compounds you’re trying to extract.
Let it simmer for two to four hours, keeping the lid on to minimize evaporation. Check periodically and add more water if the level drops too low. The liquid should reduce and darken considerably. When finished, strain out the mushroom solids using the same tools you used for the alcohol phase. Let the decoction cool completely before moving to the next step.
Step 3: Combining the Extracts
This is where the math matters. Your final tincture needs enough alcohol to remain shelf-stable, which means at least 20% alcohol by volume in the finished product. Most tincture makers aim for 25% to 30% to leave a comfortable margin.
The simplest approach: combine the alcohol extract and the cooled water decoction in roughly equal parts. If you started with 190 proof (95%) alcohol and mix it 1:1 with the water extract, your final product will land around 47% alcohol by volume, which is more than enough for preservation and gives a strong, long-lasting tincture.
If you want a lower alcohol content or a specific final volume, you can calculate more precisely. Multiply your desired final volume by the target alcohol percentage to determine how much of your alcohol extract to include, then fill the remainder with water decoction. For example, if you want 500 ml of finished tincture at 30% alcohol and your alcohol extract is roughly 95%, you’d use about 158 ml of the alcohol extract and 342 ml of the water decoction.
Pour the combined liquid into dark glass dropper bottles. Label them with the mushroom species, the date, and the approximate alcohol percentage.
Straining for a Clean Final Product
Fine sediment can make it through the first round of straining, especially from the water decoction. If your combined tincture looks cloudy or gritty, run it through a coffee filter or a fine muslin bag before bottling. This is purely aesthetic and textural. The sediment won’t harm you, but a cleaner tincture is easier to dose and more pleasant to take.
Shelf Life and Storage
A tincture with at least 20% alcohol by volume will remain shelf-stable for years without refrigeration. Higher alcohol percentages provide even more protection against microbial growth. Store your bottles away from direct sunlight and heat. Dark glass helps block UV light, which can degrade some compounds over time. There’s no strict expiration, but most herbalists consider a well-made double extraction tincture good for three to five years.
Tips for Better Results
Grind or chop your dried mushrooms as finely as possible before starting. More surface area means more contact with the solvent, which means better extraction. A coffee grinder works well for this, though very hard species like chaga may need to be broken into chunks with a hammer first.
Use each half of your mushroom material for only one extraction phase. Some methods suggest running the same material through both solvents sequentially, but splitting the material gives each solvent fresh, unspent mushroom to work with. This typically yields a more potent final product.
If you’re working with fresh mushrooms instead of dried, keep in mind they already contain a significant amount of water. This will dilute your alcohol extraction and may reduce its effectiveness. Drying the mushrooms first, or at least accounting for their water content, produces more consistent results.