Shroombiosis

How to Make Mushroom Coffee Taste Better (and Mix Smoothly)

By Onur Oncer, B.S. · · 17 min read

Scientifically reviewed by Dr. Danielle Oncer, PharmD (pharmacology, dosing & safety).

Short answer

Most mushroom coffee problems get fixed in the liquid, not the scoop. Make a paste, or shake a cold drink, so the powder doesn't clump, and add milk to soften bitter notes. If a pre-sweetened mix tastes too sweet, use more liquid or stir it into black coffee.

A tall glass of cocoa-colored drink with a fine layer of sediment at the bottom and a long spoon across the rim, beside a plain steel shaker bottle, a handheld milk frother and a small jug of oat milk on dark slate.

You made the first cup and it came out lumpy, or sweeter than you expected, or it had a flat earthy note sitting under everything. Nearly every one of those problems gets fixed by changing the liquid, the temperature or what goes in with the powder, and none of the fixes asks you to change the scoop. Don't toss the tub yet.

I'll use our own blend as the worked example, since every ingredient is on its label. Most of the fixes travel to other mushroom powders. For full recipes, start with our mushroom latte recipes.

Mushroom coffee is the name the whole category goes by, ours included, but there's no coffee in our tub and no added caffeine, on purpose. That's why our product page calls it a mix-in.

Find your problem first.

  • Clumps. Make a paste first, or froth it.
  • Powder floating on a cold drink. Make the paste before the ice goes in.
  • Sediment or grit. Shake a cold drink or froth a hot one, stir again halfway down, and finish the last mouthful.
  • Too thick. Go up to 10 oz.
  • Too sweet. Water or black coffee, no lactose-free milk, no salt.
  • Earthy. Milk, or a smoothie.

What does mushroom coffee taste like?

Like its flavor first, with the mushrooms underneath. Ours is White Chocolate Mocha, and the ingredients that shape the taste are cocoa, Ceylon cinnamon, coconut milk powder and natural flavors, sweetened with monk fruit extract and stevia leaf extract. We chose alkalized (Dutch-process) cocoa for a smooth, low-bitterness chocolate flavor that mixes easily. Seven mushrooms sit under that.

On its own it tastes like a white chocolate mocha drink, not like coffee, with the mushrooms underneath rather than up front. Most people who write to us say they don't get the gritty, earthy taste they expected from a mushroom drink, though a sharp palate may still catch an earthy note under the chocolate. What some do notice is a little sediment at the bottom of the cup. That's the mushroom and cocoa solids settling, and it's normal.

Here's how I drink it. I find ours on the sweeter side, so I stir it into dark coffee with a scoop of collagen, add no sugar, and go heavier on the liquid. I like it best warm, but I also drink it cold in a big glass of water. Plenty of people prefer it the other way: with milk, whipped up with a frother.

The powder has no coffee in it. Your cup might, the way mine does, and then the coffee brings its own caffeine. Our product page describes the blend as behaving "like a flavored creamer" and calls stirring it into morning coffee "what most of us do." So mushroom coffee here means any mushroom powder in a cup, ours stirred into yours included.

Why is my mushroom coffee clumpy?

Because the outside of the powder got wet before the inside did. Some powders form a gel skin as they wet, and that skin seals dry powder inside a pocket (opens in new tab), leaving lumps that are wet outside and dry inside, a 2025 review of instant-powder research explains (Jiang et al., 2025).

Fat makes it worse. It collects on the particle surface as a thin oil film that water struggles to get past (Jiang et al., 2025). Our blend carries coconut milk powder and cocoa, with 0.5 g of fat per scoop on the panel.

Heat isn't the culprit for most powders. High heat can trigger that gel skin in starchy ones such as arrowroot, but moderate warmth helps most powders wet faster, since warmer liquid has lower surface tension and viscosity (Jiang et al., 2025). The trouble is a whole scoop landing dry on a full cup.

Force breaks those pockets open, because hard stirring supplies the shear that tears clumps apart.

  • Make a paste first. Add about 2 oz of liquid, stir it smooth, then top up. The latte post walks through it. No study has tested the paste method head to head, but it does what the mechanism asks for, wetting every particle under concentrated stirring before there's enough liquid for a dry pocket to float.
  • Shake it if it's cold. Our label's own direction is "Shake well for the best consistency and flavor." For a cold or room-temperature drink, ten seconds in a shaker bottle beats a spoon. Keep hot and warm drinks out of a sealed shaker. Warm liquid can build pressure and spray the cap open (opens in new tab), BlenderBottle warns.
  • Froth it if it's hot. A handheld milk frother does the shaker's job in a mug, with no lid to pop.

How do you mix mushroom powder into cold water or milk?

Shake it, and give it longer. Cold works fine. It "just wants a few more seconds of stirring," as our product page puts it. Temperature and stirring trade off against each other more than you'd guess. Warming the water by 4 °C sped rehydration about as much as doubling the stirring speed from 400 to 800 rpm, in one casein-powder study the instant-powder review summarizes (Jiang et al., 2025). Cold liquid gives up the first lever. Lean on the second.

If dry powder floats on top, surface tension is holding up particles that haven't wetted yet, and cold liquid has more of it. Floating sits beside clumping as the usual trouble with powders not built for instant mixing (Jiang et al., 2025). Don't pour the scoop onto ice.

  • Start with a little warm liquid. Stir the scoop into about 2 oz of warm water or milk with a spoon or frother until smooth, then add cold milk and ice.
  • For a fully cold drink, use a shaker, not a spoon. Cold liquid needs the extra force. Shake it before the ice goes in.

Why is there sediment at the bottom of my cup?

Because some of the scoop is fine solids, and solids settle. Cocoa is the clearest example. Even factory-made cocoa milk drinks have to be engineered against it. More of the stabilizer carrageenan meant less cocoa sediment (opens in new tab) in a 2025 test, while changing the homogenization pressure made no significant difference (Öztürk et al., 2025). A home cup has no stabilizer. Fiber and mushroom solids settle too.

  • Shake it for ten seconds if it's cold, or froth it if it's hot.
  • Stir again halfway down.
  • Finish the last mouthful. It's part of the scoop you measured.

If it feels gritty, those same particles are landing on your tongue instead of at the bottom of the cup. Agitate it harder, move toward the top of the liquid range, or, for a cold drink, blend it.

If there's more foam than you want, you shook in too much air, which the rehydration review lists as the cost of over-vigorous stirring (Jiang et al., 2025). Stir it down with a spoon. Letting it sit works too, but the solids settle while you wait.

How much liquid should one scoop go in?

Our label says 6 to 10 oz, and where you land in that range is the first thing to adjust. Too thick or rich? Go to 10 oz. Thin or watery? Come down toward 6 oz, or swap the water for milk.

Change the liquid before the scoop. One scoop is the serving every dose on our label is measured on, so a half scoop to tame the flavor halves everything else in it too.

Why does my mushroom coffee taste too sweet?

In a pre-sweetened mix, the sweetener is landing stronger than your palate wants, and strength is something you control. Ours uses monk fruit extract and stevia leaf extract, both plant-derived (why those two), and they share a signature. Stevia and monk fruit both produced prominent, long-lasting bitter, metallic and chemical side tastes (opens in new tab) for a panel of 20 tasters trying each sweetener on its own. Their sweetness also registered less often than sugar's, even with every sample pitched to taste equally sweet (Tan et al., 2019). That's the aftertaste.

Stevia gets worse as it concentrates. It tasted more bitter as concentration rose (opens in new tab) for 16 trained tasters (Schiffman et al., 1995), and its sweetness topped out markedly lower than sugar's (opens in new tab) in a 40-person panel (Wee et al., 2018). Stevioside's sweetness even fell once concentration passed its peak (opens in new tab) in a third study (Hellfritsch et al., 2012). Put together, past a point a stronger cup buys more aftertaste than sweetness. So add liquid.

  • Go back to water. It's the liquid on our label, and it adds nothing sweet.
  • Use the full 10 oz. More liquid lowers the sweetness and the bitter edge together.
  • Stir it into black coffee. Coffee adds volume and its own bitterness, though sweetness tends to be the least suppressed taste in a mixture (opens in new tab), according to tests of sugar, salt, acid and quinine combinations (Green et al., 2010). Don't expect the bitterness alone to cancel it.
  • If you use milk, make it unsweetened. Many oat and almond milks are sweetened, so check the carton. Lactose-free milk tastes sweeter, too. In chocolate milk, lactose hydrolysis boosted sweetness (opens in new tab) enough to cut the sweetener needed by about a third (Nakamura et al., 2026). If you need lactose-free, an unsweetened soy or almond milk skips that boost. Fat may push the same way, though the evidence is thin. Cutting the fat in a chocolate milk from 4.5% to 0.1% lowered sweetness slightly (opens in new tab) for a trained panel (Pedersen et al., 2023), and the same paper notes two dairy studies where fat masked sweetness instead. Treat cream as a maybe.
  • Count ice as extra liquid, not as cold. Temperature had little effect on sweetness when a trained panel tested 16 sweeteners, stevia's among them, at 50 °C and 6 °C (opens in new tab) (Schiffman et al., 2000). Cooling to 5 to 12 °C did reduce sweetness directly (opens in new tab) in another study, but that one tested sugars and artificial sweeteners, not stevia or monk fruit (Green & Nachtigal, 2015). What ice does reliably is dilute the cup as it melts. That lowers sweetness like extra liquid.
  • Skip the salt. Sodium suppresses bitterness, and in a drink that's both bitter and sweet, taking the bitterness down left the mix tasting sweeter (opens in new tab) in lab tests (Keast et al., 2001).

Why does stevia leave a bitter aftertaste?

Because stevia's sweet compounds also switch on two of your bitter-taste receptors, TAS2R4 and TAS2R14. Those two stood out in a screen of 25 human bitter receptors (opens in new tab), run in cell assays alongside human tasting (Hellfritsch et al., 2012).

How much of it you notice is personal. Reb A and Reb D, two of stevia's sweet compounds, varied widely in bitterness from person to person (opens in new tab) across 122 genotyped tasters (Allen et al., 2013). Genetics plays a part. How big a part is unsettled. One TAS2R4 variant tracked stevioside bitterness (opens in new tab) in an Italian sample (Risso et al., 2014), yet the same variant did not explain Reb A or Reb D bitterness in those 122 tasters. Strong aftertaste isn't in your head.

Two things soften it.

How do I hide the earthy mushroom taste?

Milk has early evidence from coffee behind it, a few grains of salt are worth a try, and a smoothie hides it almost completely.

We found no study of a home fix for a mushroom drink's taste. The mushroom-specific research is factory-side. Encapsulating a reishi extract cut its off-flavor and bitterness (opens in new tab) (Chuensun et al., 2024), and blending reishi with yellow tea partly offset its strong fungal note (opens in new tab) (Yan et al., 2026). So each tip below is borrowed.

Milk. Adding cow or oat milk at 30% to medium and dark roast coffee decreased tasters' perception of the coffee's flavors (opens in new tab), which were bitter, roasted and burnt (Cleve et al., 2025). Coffee isn't mushrooms, and earthy isn't the same as bitter. The milks brought flavors of their own while muting the coffee's. Use milk in place of water.

Salt. Salts suppressed bitterness in most of the combinations tested (opens in new tab), with bitter compounds including quinine, urea and caffeine, though the degree varied, and sodium was the active part (Breslin & Beauchamp, 1995). Not every bitter taste responds. In cell tests on four human bitter receptors, salt dampened only one of them (opens in new tab) (Kumar & Behrens, 2024). TAS2R14, one of stevia's two bitter receptors, was largely unaffected, though it was tested with a different bitter compound. The human tests used salt at levels that tasted salty, and there's no human evidence on stevia, cocoa or mushrooms. A few grains, below the point where you taste salt, is an untested kitchen trick. Skip it if the cup already tastes too sweet. Otherwise, try it.

A smoothie. This is where the blend "disappears completely," in our product page's words. Banana, nut butter or frozen fruit bring their own strong flavor and body, which is kitchen logic, not a study.

Coffee. If the earthy note bothers you in water or milk, the creamer route hands the job to the coffee.

Or skip tasting it. If you'd prefer to taste nothing at all, a capsule is the cleaner answer, at the cost of how much fits in one, which our format comparison lays out.

What makes mushroom coffee taste worse?

Three habits, mostly. Each has a one-line fix.

  • Boiling it. Heat milk to just below a simmer, not a boil. Boiled milk scorches, and if you're wondering what heat does to the biotics, that question has its own page.
  • Sweetening before you taste. Our blend is already sweetened, so try it before reaching for syrup or a sweetened creamer.
  • Dry scooping. Our label's direction is one scoop mixed into 6 to 10 oz.

References

Frequently asked questions

What can I add to mushroom coffee to make it taste better?
Milk is the add-in with evidence behind it. In a sensory study of coffee, adding cow or oat milk decreased tasters' perception of bitter, roasted and burnt flavors. A few grains of salt are worth trying for bitterness, since salt suppressed bitterness in most combinations tested in lab studies, at levels you could taste. A pinch hasn't been tested on mushroom drinks, and salt can make a sweet drink taste sweeter. A chocolate backdrop softens stevia's aftertaste, and blending the powder into a smoothie hides it almost completely.
Can you mix mushroom coffee with regular coffee?
Yes. A mix-in with no coffee in it, like ours, works as the creamer in your morning coffee. Stir the scoop into a small splash of coffee until it's smooth, then fill the mug. If your mushroom coffee already contains coffee, mixing it into regular coffee adds its caffeine to your cup, so count both.
Why is my mushroom coffee clumpy?
With some powders, clumps form when the outside of a pocket of powder gets wet first and seals dry powder inside, and fat in a powder slows that wetting further. Cold liquid usually wets powder more slowly than warm. Mix the scoop into about 2 oz of liquid until smooth before topping up, or, for a cold drink, shake it in a shaker bottle for a good ten seconds. Never shake a hot drink in a sealed bottle.
Why is there sediment at the bottom of my mushroom coffee?
Some of what is in the scoop is fine solids that don't fully dissolve, and solids settle. Cocoa is the clearest example, since even factory-made cocoa milk drinks need a stabilizer such as carrageenan to keep cocoa particles from settling. Fiber and mushroom solids behave the same way. Shake a cold drink well or froth a hot one, stir again halfway down, and finish the last mouthful.
Why does my mushroom coffee taste too sweet?
If the powder is sweetened with stevia or monk fruit, concentration is the lever. Stevia tastes more bitter as it concentrates and its sweetness tops out lower than sugar's, and one study saw stevioside's sweetness fall once concentration passed its peak, so past a point a stronger cup likely adds more aftertaste than sweetness. Use more liquid (the label on our mix-in goes up to 10 oz per scoop), use water or black coffee, or switch to an unsweetened milk. Lactose-free milk tends to make chocolate drinks taste sweeter, so if you need lactose-free, an unsweetened soy or almond milk skips that boost. Leave out salt, which can make a bitter-sweet drink taste sweeter.
Why does stevia leave a bitter aftertaste?
Stevia's sweet compounds also activate two of the roughly 25 human bitter-taste receptors, TAS2R4 and TAS2R14, which is where the bitter off-taste comes from. How strongly people notice it varies widely, and genetics appears to play a part. More liquid and a chocolate backdrop both soften it. If you taste it strongly, you are not imagining it.

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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.