In stores around the world, there’s one mushroom that always shows up.
You stroll in looking for mushrooms and you’ll find the same thing.
Small white mushrooms, packed into plastic containers.
Maybe some brown ones nearby.
And, if you look a little closer, a few larger caps labeled portobello.
It feels like variety.
But it isn’t.
Most of what we see in stores comes from a single species, Agaricus bisporus, grown, harvested, and sold in different forms. The small white ones are picked early. The brown ones are just a slightly different variety. And the portobellos are simply what happens when they’re allowed to fully mature.
Same mushroom.
Different timing.
So how did this one become the mushroom?
Part of it comes down to control.
Unlike many wild fungi, this species could be cultivated. Not in forests or fields, but in controlled environments. First in caves, cellars, and underground tunnels. In France, these mushrooms became known as champignons de Paris, grown in the cool, dark spaces beneath the city.
But this didn’t happen all at once.
Long before large-scale cultivation, people were already trying to understand how mushrooms grew, and how to guide that process.
In the early 1600s, Francis Bacon wrote about mushrooms in Sylva Sylvarum, a collection of observations and experiments on the natural world. At the time, their growth was still largely a mystery. Bacon noted how mushrooms seemed to appear suddenly, often in damp conditions, and wondered what caused it.
Others were noticing similar patterns.
By the early 1700s, naturalists like Joseph Pitton de Tournefort were documenting the cultivation of these mushrooms, while earlier agricultural observations suggested that moving material from one growing site to another could encourage new growth.
It was a small step, but an important one.
There was no clear answer yet, only careful observation, and a growing sense that something unseen was at work beneath the surface.
Not long after, that curiosity began to turn into practice.
In France, early attempts at cultivation were already being recorded. In Le Jardinier Francois, there are references to growing mushrooms intentionally using beds of composted material and controlled conditions to encourage their growth.
It was a shift in thinking.
Mushrooms were no longer just something to observe or wonder about. They were something that could be guided, encouraged to appear, rather than simply discovered.
And that mattered.
Because once something can be grown reliably, it can be repeated. Standardized. Distributed. It becomes familiar, not because it’s the only option, but because it’s the one people see most often.
But even with all of this, it still raises a question.
Why this mushroom?
Why not something else?
Part of the answer comes down to practicality.
This species grows well in compost, without needing trees or specific environments. It can be produced consistently, indoors, and at scale. It holds up during transport. And just as important, it’s mild.
Not too strong. Not too unfamiliar.
Something people could accept easily, even if they didn’t know much about mushrooms at all.
Over time, it became the standard, not because it was the most interesting, but because it fit best into the system being built around it.
But the story doesn’t end there.
Even the way this mushroom looks wasn’t always the same.
The familiar white variety didn’t exist in the form we know it today until the early 1900s. It was discovered growing naturally among brown mushrooms on a farm in Pennsylvania, a chance mutation that stood out immediately.
It was cleaner. Brighter. More uniform.
And people preferred it.
Like white bread, it was seen as more refined, something that felt more consistent and predictable. Over time, it became the standard, grown and distributed widely, while the original brown varieties became less common.
What we see in stores now isn’t just a mushroom.
It’s the result of selection, of choosing what looks right, what feels familiar, and what people are most willing to accept.
For a long time, the larger, mature versions of these mushrooms weren’t especially popular. They grew too big, opened too wide, and didn’t fit the clean, uniform look people expected. Many were simply discarded.
Until they were given a new name.
The name itself is relatively recent, believed to have emerged in the 1980s as a marketing term, possibly inspired by the Italian word prataiolo, meaning “meadow mushroom.” Sounds pretty fitting.
It wasn’t a new species. Just a new way of seeing it.
The word portobello, sometimes spelled portabella, made the mature mushroom feel like something distinct. Something worth choosing.
And it worked.
What was once overlooked became desirable. Not because the mushroom changed, but because the way we talked about it did.
It’s a quiet example of something that happens often.
We don’t just learn what things are.
We learn what to call them.
And sometimes, that changes everything.
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