Alcohol Percentage: Why Proof Matters in Mushroom Tinctures
THE BOXED-IN MYCELIUM INDEX
Field Guide No. 006 • Mushroom Science
Introduction
Alcohol plays an important role in mushroom tinctures, but the percentage listed on a bottle can be confusing. Why do some extraction methods use nearly pure alcohol while the finished tincture contains considerably less? And does a higher alcohol percentage mean a better product?
The answer comes down to understanding how alcohol works during extraction and how the finished tincture is formulated.
At Boxed-In Mushroom Company, we use organic cane alcohol during extraction and formulate our finished tinctures to approximately 30% alcohol by volume (ABV). Understanding the difference between these two stages helps explain why alcohol strength matters, but isn't necessarily a measure of quality.
What Is Alcohol by Volume (ABV)?
Alcohol by volume, commonly called ABV, measures the percentage of ethanol in a liquid. For example, a tincture containing 30% ABV has approximately 30 mL of pure alcohol for every 100 mL of finished liquid.
Alcohol strength is also expressed as proof. In the United States, proof is simply twice the ABV. A 95% alcohol solution is 190 proof, while a finished tincture at 30% ABV is 60 proof.
It's important to understand that the alcohol used to extract compounds from mushrooms doesn't have to be the same strength as the alcohol in the finished product.
The extraction stage and the final formulation serve different purposes, and both deserve attention when evaluating how a tincture is made.
Why Alcohol Strength Matters During Extraction
Alcohol is used in mushroom tinctures because it helps extract certain compounds that water alone may not recover efficiently. These include some of the triterpenoids found in reishi mushrooms.
Different compounds respond differently to alcohol concentration. Some dissolve more readily in higher concentrations of ethanol, while others are better extracted using a mixture of alcohol and water.
This is why choosing an extraction strength involves more than simply using the strongest alcohol available. The mushroom species, the compounds being targeted, and the extraction method all play a role.
At Boxed-In Mushroom Company, we use 190-proof organic cane alcohol as our starting ingredient for alcohol extraction. This allows us to control the extraction process before combining it with our separate water extraction.
Why Water Matters Just as Much
Alcohol is only one part of the extraction process. Many important mushroom compounds, including beta-glucans, are better extracted using hot water.
Beta-glucans are complex polysaccharides found in mushroom cell walls. Hot water helps release these compounds, which may not be efficiently recovered through alcohol extraction alone.
This is where dual extraction comes in. By performing separate alcohol and hot-water extractions, we can recover a broader range of compounds than either method might extract on its own.
At Boxed-In Mushroom Company, our approach is to use both methods rather than relying on alcohol alone. It's not about making the strongest tincture. It's about making a thoughtfully prepared extract that reflects the complexity of the mushroom.
Why the Finished Tincture Has a Lower Alcohol Percentage
One of the most common misunderstandings about mushroom tinctures is that the alcohol percentage used during extraction should match the percentage in the finished bottle.
During dual extraction, the alcohol extract is combined with a separate water extract. This naturally reduces the overall alcohol concentration.
At Boxed-In Mushroom Company, we formulate our finished tinctures to approximately 30% ABV. This provides an alcohol-containing liquid formulation while allowing us to incorporate both extraction stages.
The final alcohol percentage is important for product consistency and can contribute to preservation. However, alcohol concentration alone does not establish shelf life or guarantee that a tincture is free from microbial contamination.
A higher final ABV doesn't automatically mean a more potent tincture. The amount of mushroom material used, extraction efficiency, and concentration of recovered compounds are also important considerations.
Does Higher Alcohol Mean a Stronger Tincture?
It's easy to assume that a tincture containing 40% or 50% alcohol must be stronger than one containing 30%. But alcohol percentage tells us how much ethanol is in the finished product, not how much mushroom extract it contains.
Two tinctures with identical alcohol percentages can have very different concentrations of mushroom compounds. The amount of dried mushroom used, the extraction ratio, processing conditions, and final volume all influence the finished product.
A tincture with a higher ABV isn't necessarily more concentrated or more effective. Likewise, a lower ABV doesn't automatically indicate a weaker extract.
The important question isn't simply how much alcohol is in the bottle. It's how the mushroom was processed, what compounds were extracted, and whether the finished product has been appropriately tested.
Why Extraction Ratios Matter
Alcohol percentage is only one part of understanding a mushroom tincture. Another important factor is the extraction ratio.
An extraction ratio describes the relationship between the amount of mushroom material used and the amount of extraction liquid or finished extract, depending on how the manufacturer defines it.
For example, a 1:5 ratio may indicate that one gram of dried mushroom was used for every five milliliters of finished extract. However, not every manufacturer calculates or labels extraction ratios the same way.
This is why a ratio alone doesn't guarantee potency. It doesn't tell us how efficiently compounds were extracted or how much of those compounds are present in the finished tincture.
At Boxed-In Mushroom Company, we believe understanding the extraction process is far more useful than relying on a single number printed on a label.
Field Notes
When evaluating a mushroom tincture, don't assume a higher alcohol percentage means a better product. Alcohol serves a purpose during extraction, but it's only one part of the process.
At Boxed-In Mushroom Company, we start with 190-proof organic cane alcohol, use dried mushroom fruiting bodies, and perform separate alcohol and hot-water extractions. Our finished tinctures are formulated to approximately 30% ABV.
We believe the real value is in understanding what goes into the bottle. The mushroom species, quality of the raw material, extraction method, and consistency of the finished product all matter.
Continue Exploring the Mycelium Index
Understanding alcohol percentage is just one part of understanding mushroom tinctures. Explore our other Field Guides to learn more about dual extraction, beta-glucans, triterpenes, and what really goes into a quality mushroom extract.
Selected References
1. Wasser, S. P. (2002). Medicinal mushrooms as a source of antitumor and immunomodulating polysaccharides. Applied Microbiology and Biotechnology, 60, 258–274.
2. Ruthes, A. C., Smiderle, F. R., & Iacomini, M. (2016). Mushroom heteropolysaccharides: A review on their sources, structure and biological effects. Carbohydrate Polymers, 136, 358–375.
3. Chemat, F., Vian, M. A., & Cravotto, G. (2012). Green extraction of natural products: Concept and principles. International Journal of Molecular Sciences, 13(7), 8615–8627.
