Short answer: mushrooms are mildly acidic in the pan and alkaline-forming in the body — and Dr. Sebi approved all of them but one. Shiitake is the single exclusion. Species vary more than most people expect: straw mushrooms are nearly two pH points more acidic than button.
The numbers, and why species matters here
Common mushrooms measure pH 6.00 to 6.70 raw and 6.00 to 6.22 cooked. Unlike most foods on this list, the variety genuinely changes the answer:
| Variety | pH |
|---|---|
| Common / button | 6.00–6.70 |
| Oyster | 5.50 |
| Straw | 4.90 |
Straw mushrooms at 4.90 come close to the 4.6 line food scientists use to separate high-acid from low-acid foods. So “mushrooms are pH 6.0 to 6.7” holds for the ones in most supermarkets, and the picture widens once you move beyond them.
On PRAL, common mushrooms come out at −1.4 — alkaline-forming. One table gives −2.5; the rest agree on −1.4. The published PRAL tables cover mushrooms as a single category rather than breaking out individual species, so −1.4 is the figure to use for shiitake, oyster or portobello as much as for button.
Are mushrooms Dr. Sebi approved?
Yes, with one exception, and the phrasing is consistent across every reproduction of the guide: “mushrooms — all except shiitake.”
Some versions of the list itemise the permitted kinds as cremini, enoki, oyster and portobello. Both readings circulate: the itemised one, which names four, and the blanket “all except shiitake,” which is broader and appears more often. If you prefer to stay close to the narrower reading, the four named kinds are easy to find and cover most cooking.
The stated reason for excluding shiitake is that it is “a hybrid mushroom.” Lentinula edodes is native to East Asia and has been grown on felled hardwood logs — oak, chestnut, shii — for something close to a thousand years, which is where the name comes from: shii for the tree, take for mushroom.
One point often confused with this: kombucha is also excluded, and is sometimes described as a mushroom in this context. It is not one. A SCOBY is a culture of bacteria and yeast, not a fungus in the culinary sense, so if you are working through the excluded list you will not find it under mushrooms.
Choosing, cleaning and cooking them
Mushrooms reward a little technique more than almost anything else on the approved list, and most of what goes wrong in a home kitchen comes down to three habits.
Buying. Look for caps that are dry to the touch but not shrivelled, with no dark wet patches. On button and cremini, tightly closed gills mean a younger mushroom with firmer texture; open gills are fine to eat and give you more flavour, but they will cook softer and darken whatever they are cooked in. Loose mushrooms from a bin are almost always cheaper than punnets and let you pick over them. Oyster mushrooms should look like fresh petals, not leather; if the edges have curled and hardened, they are past it.
Storing. Keep them in a paper bag in the fridge, never sealed plastic — plastic traps moisture and turns them slimy in a day or two. A paper bag gets you four to seven days for button and cremini, less for oyster, which are more delicate and are best used within two or three days. If a batch is going over, cook it all and refrigerate the cooked mushrooms; they hold another three days and improve in a soup.
Cleaning. Do not soak them. Mushrooms absorb water quickly and waterlogged mushrooms steam instead of browning. Wipe caps with a damp cloth, or rinse briefly under cold running water and pat dry at once. Trim the dry end of the stem rather than discarding the whole stem, which is perfectly good for stock.
Cooking. Use a wide pan and give them room. Crowded mushrooms release their water faster than it can evaporate and end up grey and soft. Start them in a dry or lightly oiled hot pan, leave them alone for two or three minutes so a surface forms, then stir. Salt draws water out, so add sea salt near the end rather than the beginning. Oil goes in after they have browned, not before, since mushrooms will drink up whatever fat is in the pan at the start and give you nothing back for it.
What to use instead of shiitake
Shiitake is usually doing one of two jobs — meaty texture, or deep savoury flavour. Both are covered:
- Oyster mushrooms — the closest match for texture and savouriness, and explicitly named as permitted. Tear them along the grain into strips rather than slicing; the ragged edges brown better.
- Portobello or cremini — best where shiitake was being grilled or roasted for substance. Score a portobello cap in a shallow crosshatch before grilling so it cooks evenly and takes seasoning.
- Sea vegetables — wakame, dulse, arame, hijiki and nori are all approved, and they are the strongest source of savoury depth on this list. If it is the umami you are missing rather than the texture, this is the swap. A strip of dulse dropped into a pot of soup does much of what a dried shiitake was doing.
How to use it
A normal portion is about a cup of sliced raw mushrooms per person, which cooks down to roughly half that. They shrink by more than half, so buy generously — a pound of button mushrooms feeds three or four people as a side.
The simplest good preparation is also the cheapest: quarter a pound of cremini, dry-sear them hard in a wide pan, add sliced onion once they have colour, then a little olive or grapeseed oil, sea salt, cayenne and oregano, and finish with key lime juice off the heat. That sits well on quinoa or amaranth, folds into a callaloo or kale pot, or goes cold into a salad the next day.
Mushrooms also take well to being cooked in a large batch on one day and used across three — in a grain bowl, stirred into soup, piled on flatbread. Keep the pan juices; they are the best part and make a base for whatever comes next.
This is food, not a treatment for any condition. If you have symptoms or a diagnosis, see your doctor — eating well sits alongside medical care, not instead of it.
Common questions
Are mushrooms acidic?
Mildly, as a food — around pH 6.0 to 6.7 for common varieties. After digestion they are alkaline-forming, at a PRAL of about −1.4.
Is shiitake Dr. Sebi approved?
No — it is the one mushroom the guide excludes, on the stated grounds that it is a hybrid. Every other kind you are likely to find is permitted.
Can I eat mushrooms with acid reflux?
Mushrooms aren’t a common reflux trigger — they’re low in acid and low in fat. How they’re cooked matters more; heavy oil or cream is the more likely problem.
Is cream of mushroom soup alkaline?
No. The mushrooms are alkaline-forming but the dairy and the processing aren’t, and dairy is excluded from the approved list entirely.
Can I use dried mushrooms?
Yes, and they are worth keeping. Soak them in hot water for twenty to thirty minutes, lift them out rather than pouring, and save the soaking liquid — that liquid carries most of the flavour. Leave the last spoonful behind, since grit settles at the bottom.
Related
- Is avocado alkaline or acidic?
- Is rice alkaline or acidic?
- Is broccoli alkaline, and why isn’t it approved?
- Is honey alkaline or acidic?
- The Dr. Sebi diet, start to finish
- The complete approved food list
Not sure if a variety is approved? Scan it in the Ackaline app for an instant answer — free to download. Every approved mushroom, herb and vegetable is covered in The Alkaline Healing Blueprint.
For education, not medical advice. Talk to your doctor before making significant changes to how you eat.
