White vs. Cremini vs. Portabella: One Mushroom, Three Prices, Costed Per Cooked Cup

Before comparing prices, it helps to know what you're comparing. Several popular explainers say the three mushrooms "differ solely in age," as if a white button just turns brown and grows into a portabella. That's close, but not quite right.

All three are Agaricus bisporus. What differs is the strain and the harvest timing. Mycologist Tom Volk explains that portabella is a marketing name for brown strains of Agaricus bisporus left to open and show their mature gills, while cremini is that same brown strain picked before the cap opens. So cremini and portabella are one mushroom at two ages. The white button is the white strain of the species, picked young.

That's why "one mushroom" in the title holds up at the species level, and why it's reasonable to expect the three to be close nutritionally. As the worksheet below shows, the government's newest records back that up. The price gap between them is where the real differences lie.

What the names on the package mean

You'll see several spellings and brand names, and they all map onto three products:

• White, white button, button: the white strain, harvested young and closed.
• Cremini, crimini, baby bella, brown: the brown strain, harvested closed.
• Portabella, portobello, portabello: the brown strain, harvested open, usually sold as whole caps or thick slices.

USDA's own reports use more than one spelling: the retail report prints "portobella," and the grower survey prints "Portabello." All of them refer to the same mushroom.

Store shelf prices are hard to track at scale. Retailer websites resist automated reading, and a shelf price in one city says little about another. So we used a national, public source instead.

Each week the USDA Agricultural Marketing Service publishes a report called Weekly Grocery Store Specialty Crops Feature Activity. It counts how many grocery stores featured an item in their ads and gives the weighted average advertised price for each pack size. We read 52 weekly editions of that USDA report, covering the weeks of September 5, 2025 through August 28, 2026, and recorded every mushroom line in the national conventional summary.

For each variety we then worked out an ad-weighted price per ounce for the year. That means a week when 4,000 stores advertised white mushrooms counts for more than a week when 200 did, and a 1-pound package is compared with an 8-ounce one on the same per-ounce basis.

How much data sits behind each number

White and cremini were advertised every week of the year, both most often as 8-ounce packages. Portabella turned up in 34 of the 52 weeks, usually as a 6-ounce package. Our plan said that if portabella appeared in fewer than about 13 weeks, we'd estimate its price from grower data instead. It cleared that easily, so all three columns below use real advertised prices.

Here's what a year of ads adds up to, before any cooking.

The white and cremini figures are the surprise. Comparing the same 8-ounce package, cremini averaged about 15 cents more than white over the year, roughly 8%. And cremini was the cheaper of the two in 11 of the 52 weeks. The newest edition, for the week of September 18, 2026, is one of those weeks: cremini 8-ounce packs at $1.77 across 3,398 store ads, against $2.18 for white.

Portabella is in a different league. Per ounce, it averaged nearly double the price of white. Part of that is the smaller 6-ounce pack, and part is simply that it's the premium product in the case.

Seasonal produce often has a big price shape across the year, but mushrooms are grown indoors year-round, so they don't. For how that compares with fruits and vegetables that do swing by season, our breakdown of month-by-month produce prices is a useful companion.

In-Season vs. Off-Season Produce: 15 Fruits and Vegetables Priced Month by Month

This is where the per-ounce prices start to shift. A mushroom that loses more weight in the pan takes more raw ounces to fill a cooked cup, so its real cost goes up.

To measure that shrinkage we used USDA FoodData Central, which publishes lab-analyzed records for raw and cooked mushrooms. The relevant records are raw and stir-fried white mushrooms, raw and grilled portabella, and raw cremini. There's no cooked cremini record in the database, so, as planned, cremini borrows the white-mushroom cooking factor. That's a reasonable stand-in for two mushrooms of nearly identical water content, but it's still a stand-in.

Working out the cooking yield two ways

We calculated how much of the raw weight survives cooking in two independent ways, using the paired raw and cooked records in USDA FoodData Central.

• Protein basis. Protein doesn't evaporate. If raw white mushrooms are 3.09% protein and stir-fried ones are 3.58%, the cooked mushrooms must be about 86.3% of their raw weight.
• Dry-solids basis. Everything that isn't water should also survive the pan. Raw white mushrooms are 7.55% solids and stir-fried ones 8.90%, which points to 84.8%.

For white mushrooms the two methods agree within about a point and a half, which is reassuring. For portabella they're further apart: 64.3% on the protein basis and 76.9% on the solids basis. That's why the portabella column below gives a range rather than a single number. We used the midpoint of the two methods as the main figure for each mushroom.

We also checked the boiled white-mushroom record, and it failed. On the protein basis it implies the mushrooms gain 42% in weight when boiled, which isn't possible if protein is conserved. Its solids basis, though, gives 84.6%, almost exactly matching the stir-fry. Our best reading is that protein seeps into the cooking water, so for boiled mushrooms solids are the more reliable measure. That's also why we used the stir-fried record as the white reference.

The worksheet

Here's how to read it. A cooked cup of sliced white mushrooms weighs about 108 grams and starts as about 4.45 ounces of raw mushrooms, which is just over half of an 8-ounce package. At the year's advertised price, that's about $1.05. The same cup made from cremini costs about $1.14.

Portabella shrinks more and its cooked cup is heavier, because thick grilled slices pack more densely. So it takes about 6 ounces of raw portabella, roughly one whole 6-ounce package, to fill a cooked cup, and at the year's advertised price that comes to about $2.76. Per raw ounce, portabella cost 1.9 times as much as white. Per cooked cup, it costs about 2.6 times as much.

If you cook your mushrooms down further than USDA's stir-fry sample, until they're deeply browned and much smaller, all three will cost more per cooked cup in about the same proportion. The actual dollar amounts would rise, but the order and the gaps between them wouldn't change much.

If you've wondered more broadly how cooking changes what's on your plate, our look at foods that shift when heated covers some of the same ground.

Raw vs. Cooked: The Foods That Get More Nutritious When You Heat Them

Mushrooms aren't a major protein source. A cooked cup gives you about 3 to 4 grams, so price per gram of protein is here as a yardstick, not as a reason to buy them. It does show one thing clearly, though: which USDA record you use can change the story for cremini.

Two USDA datasets, two cremini stories

The worksheet above uses USDA's SR Legacy records, because that's the only dataset with cooked mushroom entries. In SR Legacy, raw cremini is listed at 2.5 grams of protein and 0.6 grams of fiber per 100 grams, both noticeably lower than white. That's why cremini looks weaker on protein and fiber in the table.

USDA's newer Foundation Foods analysis in FoodData Central, published in 2021, measured the three again with current methods, and the gap disappears:

On these newer figures, cremini works out to about $0.29 per gram of protein, the same as white. Portabella improves slightly to about $0.59, but it's still roughly double the other two. So the robust conclusion isn't that one mushroom is more nutritious than the others. It's that the three are, for practical purposes, the same food, and portabella costs about twice as much per cooked cup and per gram of protein whichever dataset you use.

If you like seeing this kind of side-by-side for other staples, our three-way dairy comparison runs the same style of math on the yogurt aisle.

Cottage Cheese vs. Greek Yogurt vs. Skyr: A Full Nutritional + Price Showdown

A note on vitamin D labels

USDA keeps separate records for mushrooms that have been exposed to ultraviolet light, and the difference in listed vitamin D is large. Raw white mushrooms are listed at 0.2 micrograms per 100 grams, and the UV-exposed version at 26.2 micrograms. Cremini goes from 0.1 to 31.9, and portabella from 0.3 to 28.4. The worksheet uses the standard, non-UV records throughout. If you're comparing packages for vitamin D content, the thing to look for is "UV-treated" or a similar note on the label. That label matters much more than the variety.

The last part of the math asks where the price gap comes from. Is it set on the farm, or added somewhere between the farm and the store ad?

The USDA National Agricultural Statistics Service's Mushrooms report, released August 19, 2026, covers the 2025–2026 growing season. It reports that brown mushrooms, a category that combines cremini and portabella, sold at an average grower price of $1.90 per pound. White isn't reported on its own. We derived it by subtracting brown from all Agaricus fresh-market sales, which leaves about 389 million pounds of white at roughly $1.24 per pound. That's an estimate, and it assumes nearly all brown mushrooms are sold fresh rather than for processing.

Nearly three-quarters of that crop comes from one state. Penn State Extension notes that Pennsylvania accounted for 74% of U.S. volume, including most of the white buttons Americans eat.

The farm-to-ad spread

Going in, we expected the brown mushrooms' premium to be mostly a retail markup. For portabella, that's true. It starts at the same $1.90 grower price as cremini and ends up $3.53 per pound above white in the ads, far more than the 66-cent gap between brown and white at the farm.

For cremini, it's the reverse. At the farm, brown mushrooms sell for about 66 cents a pound more than white. In the ads, cremini runs only about 33 cents a pound more than white. So about half of cremini's farm premium doesn't make it to the ad price, and cremini carries the smallest markup of the three.

Two caveats matter. First, USDA doesn't publish separate grower prices for cremini and portabella, so both are shown at the combined brown price. Portabella's true farm price may well be higher than cremini's, which would shrink its markup somewhat. Second, the grower season (July through June) and our 52-week ad window (September through August) overlap but don't line up exactly. Neither changes the overall picture, but both are worth knowing.

The same farm-versus-store gap shows up across the grocery store. For another example of how preparation and packaging change the cost per gram of protein, our chicken comparison walks through a similar calculation.

I Did the Math: Batch-Cooked Chicken vs. Deli Meat on Cost, Protein, and Sodium

The variety you pick is only one of several things that move the price. Across the year's ads, a few other factors mattered as much or more.

Pack size

Larger packs were consistently cheaper per ounce, and the effect was about as big as the gap between white and cremini:

A 1-pound package of cremini came out cheaper per cooked cup than an 8-ounce package of white. If you prefer cremini's deeper color and flavor, a bigger pack often closes most of the gap. The catch is that fresh mushrooms don't keep long, so a bigger pack only saves money if you use it.

The week you shop

Advertised prices moved around a lot from week to week. White 8-ounce packs ranged from $1.42 to $2.37 over the year, cremini from $1.29 to $2.79, and portabella 6-ounce packs from $1.49 to $3.99. With swings that size, the week's ad matters more than the choice between white and cremini. The 11 weeks when cremini undercut white are proof of that.

Organic

Organic mushrooms showed up in the national organic ad summary only occasionally, 13 weeks for white and 12 for cremini. Their 8-ounce packs averaged about $3.19, roughly 1.7 times the conventional price. For anyone watching the budget, organic is a much bigger price lever than white versus brown.

Portabella's role

None of this means portabella isn't worth buying. A whole grilled cap does something sliced white mushrooms can't, and some cooks use it as a centerpiece, not as one ingredient among many. If you're weighing a portabella cap against other burger options, our patty comparison covers cost and protein across plant-based and beef choices.

Plant-Based Patties vs. Beef: Cost, Protein and Sodium Per Patty

A worksheet like this is only as good as its inputs, so here's where it's solid and where it's softer.

It's solid on relative prices. More than 190,000 store ads over a full year make the ranking and the rough size of each gap reliable: white and cremini close together, portabella about twice as much. It's also solid on the species point and on the finding that the three are nutritionally similar in USDA's newest analysis.

It's softer on the exact dollar amounts. Advertised prices aren't shelf prices, so what you actually pay may differ. The cooking yields come from single USDA samples, and portabella's two methods disagree enough that we give a range. Cremini borrows the white cooking factor because no cooked cremini record exists. And the grower-side split between white and brown is our own subtraction, not a USDA-published figure.

Taken together, the math supports one simple habit: compare mushrooms per cooked cup, not per pound. On that basis, white and cremini are close enough that the week's ad or the pack size can decide it, and portabella costs about 2.6 times as much for the same cup.