Is Mushroom Coffee Less Acidic Than Regular? The pH Numbers
Is Mushroom Coffee Less Acidic Than Regular Coffee? Usually a Little, and Not for the Reason You'd Think
By Chris Rea, COO of Mariko Grove · July 2026
Updated August 26, 2026
The honest answer is: often slightly, but it depends far more on the roast, the brew method, and the blend than on the mushrooms themselves. There is no magic in a mushroom that neutralizes coffee acid. What actually happens is simpler, and once you understand it you can make almost any coffee taste less acidic, ours included.
A quick note before we start: this post is about acidity you can taste and measure, meaning pH and flavor. It is not about health effects, which vary from person to person and which we don't make claims about. If you're weighing the two drinks more broadly, our mushroom coffee vs regular coffee comparison covers caffeine, taste, and cost side by side. This article goes deeper on one thing only: acidity.
The Short Answer
Most mushroom coffee is a little less acidic than a bright, light-roast regular coffee, for three reasons that have nothing to do with mushrooms being alkaline:
- Blend ratio. When mushroom extract makes up part of the cup, there is slightly less coffee per serving, so there is slightly less coffee acid per serving.
- Roast level. Most mushroom coffees, including ours, use a medium roast, and roasting degrades some of the acids found in the raw bean.
- Perceived smoothness. Medium-roast, earthy, lower-bitterness coffee reads as "smoother" on the palate, and people often describe smooth coffee as less acidic even when the pH is close.
Put simply: acidity is set by the bean, the roast, and the brew. Mushroom coffee tends to sit on the gentler end of that range, but a dark-roast regular coffee brewed as cold brew can easily be less acidic than a light-roast mushroom coffee. The category name is not the deciding factor.
What "Acidity" Actually Means in Coffee
The word "acidity" gets used two different ways, and mixing them up is where most of the confusion starts.
pH is the chemical measure. It runs from 0 (very acidic) to 14 (very alkaline), with 7 being neutral. Brewed coffee generally measures between a pH of about 4.85 and 5.10, which puts it in the mildly acidic range, roughly alongside a banana or a tomato. That range holds up across multiple studies (Rao and Fuller, 2018, Scientific Reports).
Tasted acidity is the bright, tangy, sometimes sour quality you notice on the front of your tongue, especially in light-roast and single-origin coffees. This is a flavor, and it does not track pH exactly. A coffee can taste quite bright while measuring a fairly ordinary pH.
This distinction matters because "less acidic" can mean "higher pH" or "tastes smoother," and the two don't always move together. Most people asking the question mean the second one: they want a cup that tastes rounder and less sharp.
What Actually Determines Coffee Acidity
Three things move the needle far more than whether mushrooms are in the cup.
1. The bean and its origin
Coffee naturally contains acids like chlorogenic, citric, and malic acid. Higher-grown beans and certain origins carry more of them, which is why some single-origin coffees taste vividly bright. The starting material sets the ceiling.
2. The roast level
Roasting breaks down many of the acids in the green bean. Longer, darker roasting degrades more of them, so darker roasts generally carry less measurable acid and taste mellower. Lighter roasts hold on to more citric, malic, and chlorogenic acid and taste noticeably brighter (Yeager et al., 2023, "Acids in brewed coffees"). Interestingly, the pH itself shifts only modestly across roast levels; it's the acid content and the perceived brightness that change the most.
3. The brew method
How you brew changes which acids end up in the cup and how many. The clearest example is cold brew. Because it steeps in cold water rather than hot, cold brew extracts fewer of the acids that hot water pulls out. Studies measuring total titratable acidity found cold brew consistently lower than hot brew of the same coffee, even when the pH readings were close (Rao and Fuller, 2018). Grind size, water temperature, and steep time all nudge it as well.
Coffee pH, By the Numbers
Here is roughly where common coffees land. Treat these as directional ranges, not precise product specs, since pH varies with bean, roast, brew, and even water.
| Coffee | Typical pH (higher = less acidic) | Notes |
|---|---|---|
| Light roast, hot brewed | ~4.85 to 4.95 | Brightest tasting; retains the most citric and malic acid |
| Medium roast, hot brewed | ~4.9 to 5.1 | Balanced; the roast level most mushroom coffees use |
| Dark roast, hot brewed | ~5.0 to 5.2 | Mellowest tasting; roasting has degraded more of the acid |
| Cold brew (any roast) | Comparable pH, lower titratable acidity | Fewer extracted acids than the same coffee brewed hot |
| Mushroom coffee | Depends on roast, brew, and blend ratio | Often reads as smoother; no standardized measurement exists across brands |
pH figures reflect the roughly 4.85 to 5.10 range reported for brewed coffee (Rao and Fuller, 2018) and the roast-level acid findings above; individual coffees vary, so use them as a guide rather than a label.
Practical Reference: Factors That Change Acidity, and Which Way
If your goal is a smoother, less sharp cup, these are the levers that actually work, ranked roughly by how much they matter.
| Factor | Direction | Honest note |
|---|---|---|
| Roast level | Darker = less acidic | The single biggest lever. Roasting degrades the bean's acids. |
| Brew method | Cold brew = lower titratable acidity | Cold steeping extracts fewer acids than hot water. |
| Coffee-to-mushroom ratio | More mushroom extract = slightly less coffee acid per cup | Real but modest; it works by diluting the coffee, not neutralizing acid. |
| Bean and origin | Lower-grown, some origins = less bright | Sets the starting point before you brew anything. |
| Grind and steep time | Over-extraction can raise sourness | Dialing in your brew smooths the cup; see our brewing guide. |
| Adding milk | Softens perceived acidity | Doesn't change pH much, but rounds out the taste. |
Where Mariko Grove Lands
Being straight with you: we have not lab-tested the pH of our own blends, so we won't quote you a number we can't stand behind. What we can tell you is how ours is built and why drinkers tend to describe it as smooth.
Mariko Grove is a medium-roast Arabica base blended with Lion's Mane and Chaga extract. Medium roast means some of the raw bean's acids have already been mellowed in roasting, and the mushroom extract means each cup is a touch less pure coffee than a straight brew. Both of those nudge toward the smoother, less bright end of the spectrum. Most customers describe our coffee as earthy and chocolate-forward with low bitterness rather than sharp or tangy.
That is a description of taste and roast, not a measured pH claim and not a health claim. If your priority is the lowest-acid cup you can make, the biggest wins are still roast and brew method: reach for a darker roast or brew it as cold brew. You can do exactly that with our ground mushroom coffee, and our brewing guide walks through cold brew and every other method step by step.
How to Make Any Coffee Taste Less Acidic
Whether you drink mushroom coffee or regular, these are the moves that genuinely smooth out a cup:
- Choose a medium or dark roast. This is the biggest single change you can make. Lighter roasts keep more acid; darker roasts shed it.
- Try cold brew. Steeping in cold water pulls fewer acids into the cup than hot brewing. Our brewing guide covers how to cold brew our ground blend.
- Don't over-extract. Water that is too hot or grounds that steep too long can taste sour. Aim for 195 to 205°F and follow the timing for your method.
- Add a splash of milk. It softens the perceived sharpness, even though it barely moves the actual pH.
- Use good water. Very soft or acidic water can accentuate a coffee's tang; filtered, balanced water gives a rounder cup.
New to all of this? Our beginner's guide to mushroom coffee covers the basics, and our mushrooms page explains what Lion's Mane and Chaga actually are and how we extract them.
Frequently Asked Questions
Is mushroom coffee less acidic than regular coffee?
Often slightly, but not always, and not because of the mushrooms. Most mushroom coffees use a medium roast and contain a bit less coffee per cup, both of which push toward a smoother, less acidic taste. A dark-roast or cold-brew regular coffee can easily be less acidic than a light-roast mushroom coffee. Roast level and brew method matter far more than whether the coffee contains mushrooms.
What is the pH of coffee?
Brewed coffee generally measures between about 4.85 and 5.10 on the pH scale, which is mildly acidic. That range holds fairly steady across roast levels, though the amount of acid and the perceived brightness change more than the pH number does.
Is mushroom coffee alkaline or acidic?
Acidic, not alkaline. Like all coffee, mushroom coffee sits on the acidic side of the pH scale, generally around 4.85 to 5.10, which is only mildly acidic and nowhere near the alkaline range above pH 7. Adding mushroom extract does not turn the cup alkaline, because the mushrooms are not a base that neutralizes coffee acid. What is fair to say is that mushroom coffee is often slightly less acidic than a bright light roast, mostly because it tends to be medium roasted and a little diluted with extract. So the accurate framing is acidic, just usually a bit less so, rather than alkaline.
Does dark roast coffee have less acid than light roast?
Generally yes. Roasting degrades many of the acids in the green coffee bean, so darker, longer roasts carry less measurable acid and taste mellower. Lighter roasts retain more citric, malic, and chlorogenic acid and taste brighter. The pH shifts only modestly, but the tasted acidity changes a lot.
Is cold brew less acidic than hot coffee?
By titratable acidity, yes. Cold brewing extracts fewer of the acids that hot water pulls from the grounds, so cold brew of the same coffee consistently measures lower total acidity, even when the pH reading is close. It is one of the most reliable ways to get a smoother cup from any coffee, mushroom or regular.
Does Mariko Grove mushroom coffee have a low pH?
We have not lab-tested the pH of our blends, so we won't give you a specific number. What we can say is that it's a medium-roast Arabica with Lion's Mane and Chaga, and most customers describe it as smooth, earthy, and low in bitterness rather than sharp or bright. For the lowest-acid cup, brew a darker roast or make cold brew.
Can I drink mushroom coffee if I have acid reflux?
Coffee can trigger reflux symptoms in some people, and that holds whether it is mushroom coffee or regular coffee. A lower measured pH is a fact about taste and chemistry, not a medical property, so "less acidic" does not mean "easier on reflux," and we make no claim that it is. If you have acid reflux or GERD, whether coffee works for you, and how much, is a question for your doctor rather than a coffee label.
What is the least acidic mushroom coffee?
There is no single "least acidic" brand, because roast level, brew method, and the coffee-to-mushroom ratio move measured acidity far more than the label does. As a rule of thumb, darker roasts and cold brewing test lower in acidity than light roasts and hot drip. If low acidity is your goal, choose a medium or dark roast and try cold brewing it, and keep in mind that most brands, ours included, do not publish a measured pH, so treat any "low acid" claim as a taste description rather than a lab number.
The Bottom Line
Is mushroom coffee less acidic than regular coffee? Usually a little, mostly because it tends to be medium roasted and slightly diluted with mushroom extract, not because mushrooms cancel out acid. If a smoother cup is what you're after, the roast and the brew are your real controls. Pick a medium or dark roast, consider cold brew, and don't over-extract, and you can dial in a gentle-tasting cup from almost any coffee.
Want to taste where ours lands? Start with our ground mushroom coffee or instant mushroom coffee, both a medium-roast Arabica base with Lion's Mane and Chaga, or browse the whole mushroom coffee collection. Or compare the two drinks head to head in our mushroom coffee vs regular coffee breakdown.
About the Author
Chris Rea is the COO of Mariko Grove, overseeing operations, sourcing, and shipping logistics. He ensures every batch of mushroom coffee is handled with care from warehouse to doorstep.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.