Before Heinz Took Over, There Was a Darker, Stranger Condiment on Every American Table

Picture this: It's 1820, and you're sitting down to a roast in a Philadelphia dining room. The table is set with bread, a pat of butter, maybe some pickled vegetables — and a small glass bottle of dark, pungent sauce that smells faintly of the forest floor. Nobody thinks twice about it. It's just ketchup.

Except it has absolutely nothing to do with tomatoes.

What Even Was Mushroom Ketchup?

Mushroom ketchup is exactly what it sounds like — a condiment made from fermented mushrooms, salt, and spices. The process involved salting down fresh mushrooms (usually field varieties), letting them break down over several days, then straining and simmering the liquid with cloves, allspice, and black pepper until it reduced into a deeply savory, almost black sauce.

The result was intense. Think Worcestershire sauce, but earthier and more complex — something closer to a concentrated mushroom broth than anything you'd recognize as "ketchup" today. It was poured over meats, stirred into gravies, splashed into stews. Cooks loved it because a few drops transformed a simple dish into something that tasted like it had been labored over for hours.

The word "ketchup" itself actually predates tomatoes entirely. It likely derives from the Hokkien Chinese word kê-tsiap, a fermented fish sauce that British traders encountered in Southeast Asia in the late 1600s. By the time the concept made it to American kitchens, cooks were making "ketchup" from all kinds of things — walnuts, oysters, anchovies, and, most popularly, mushrooms.

Recipes for mushroom ketchup appear in nearly every major American cookbook of the 18th and early 19th centuries. Hannah Glasse included it. So did Mary Randolph in The Virginia Housewife. For a long stretch of American culinary history, this stuff was as commonplace as olive oil is today.

So What Happened?

The short answer is: tomatoes, industrialization, and the relentless efficiency of mass production.

Tomato-based ketchup started gaining ground in the mid-1800s, but it was messy, inconsistent, and prone to spoiling. Early commercial versions were often loaded with preservatives — coal tar dyes, benzoate of soda — that made them controversial and, frankly, a little dangerous. Then Henry Heinz came along.

In 1876, Heinz introduced a tomato ketchup made with ripe tomatoes and enough vinegar to be shelf-stable without sketchy additives. It was sweet, bright, and visually appealing in a way that dark mushroom sauce simply wasn't. Heinz marketed aggressively, bottled it beautifully, and put it on the table at restaurants and diners across the country.

At the same time, industrial farming was standardizing the food supply. Producing mushroom ketchup at scale was tricky — wild mushrooms are seasonal, inconsistent, and labor-intensive to process. Tomatoes, on the other hand, could be grown in enormous quantities, canned efficiently, and turned into a product that looked exactly the same every single time.

By the early 1900s, mushroom ketchup had essentially been squeezed off the shelf. It didn't disappear because people decided they didn't like it. It disappeared because the industrial food system had no room for something that complicated.

The Culinary Amnesia That Followed

What's striking isn't just that mushroom ketchup faded — it's how completely it was forgotten. Within a generation or two, most Americans had no idea it had ever existed. The word "ketchup" became so synonymous with tomatoes that the idea of a mushroom version started to sound like a quirky historical footnote rather than a legitimate food tradition.

Mushroom ketchup held on longer in Britain, where it never fully disappeared from specialty shops. But in the US, it became the kind of thing you'd stumble across in a footnote in an old cookbook and think, huh, that's weird.

The Quiet Comeback

Here's the twist: mushroom ketchup is back, and it's being driven by the same people who brought you sourdough obsession and home fermentation kits.

A handful of small-batch producers — mostly on the East and West Coasts — have started bottling the stuff again. Companies like Hive Mind Ferments and a scattering of Etsy-based fermentation hobbyists are selling handcrafted versions that would be recognizable to a colonial-era cook. Some high-end restaurants have started making their own in-house, quietly adding it to butter sauces and braises.

Chefs who work with umami-forward cooking have rediscovered what 18th-century cooks already knew: fermented mushroom liquid is a flavor bomb that does things to a dish that tomato ketchup simply cannot.

If you want to try it yourself, the process is surprisingly approachable. Salt down a pound of cremini or portobello mushrooms, let them sit for a few days, drain off the liquid, and simmer it down with spices. What you end up with is something that has no modern equivalent — a condiment that tastes like it comes from a different culinary universe.

Which, in a way, it does.

Why This Matters Beyond Nostalgia

Mushroom ketchup is a useful reminder that the food landscape we consider "normal" is actually the result of a series of commercial decisions made a century ago. We didn't choose tomato ketchup over mushroom ketchup because it tasted better. We chose it because it was cheaper to make, easier to sell, and simpler to standardize.

That's not a criticism of Heinz — it's just how industrial food works. But it does mean there's a whole parallel culinary history sitting just beneath the surface of what we eat, full of flavors and techniques that were quietly retired not because they failed, but because they were inconvenient.

Mushroom ketchup is one small piece of that story. And if you can get your hands on a bottle, it's worth tasting — if only to understand what your great-great-grandmother was actually putting on her roast beef.