What's actually in lab-grown salmon, according to the company that makes it
Wildtype's own FAQ lists nine plant-based additives beyond cultivated cells and a protein count under half that of real salmon. Here's what the company actually discloses.
Emily Harper
A video about "lab-grown salmon" is not new anymore — the FDA cleared the first one over a year ago. What is new is Wildtype, the company that makes it, quietly answering the question everyone assumes is obvious: is it just fish cells? Their own FAQ page says no, and lists exactly what else is in there.
The cells are real. So is everything else on the label
Wildtype's cultivated salmon starts with coho salmon cells grown in steel tanks, the same basic setup as a brewery. But the finished sashimi-cut product isn't just those cells. In the company's own words: "After we harvest our cells, we integrate them with plant components to create the desired texture and flavor of a traditional salmon fillet."
Those plant components, according to Wildtype's own FAQ, are: fats from algae, canola and sunflower seeds, soy protein, potato starch, konjac, paprika (for color), carrageenan, and natural flavors. The lox version adds beta carotene, lycopene, sodium alginate, methylcellulose and yeast extract, each listed at under 2%. That's nine additional ingredients doing the work of texture, binding, color and flavor that a whole cut of actual salmon does on its own.
Wildtype isn't hiding this — the company states plainly that "cultivated salmon cells are the first ingredient in our salmon (after water)." That's a real claim about ranking by weight, not a claim that the product is cells alone.
Why the additives are there
None of these are mystery chemicals. Carrageenan is a seaweed extract used across the food industry as a thickener — Tallow has covered it showing up in bottled coffee drinks for the same reason: it holds texture together in a liquid or semi-solid product. Methylcellulose and sodium alginate are common binders in plant-based and reformed-protein foods. Konjac root is a standard vegan gelling agent. The function is straightforward: raw cultivated cells on their own don't hold together, flake, or sear the way a fillet does, so the plant ingredients rebuild the texture a real cut of fish gets for free from its muscle fiber structure.
The number that isn't on the marketing page
Ask Wildtype directly whether the product is nutritionally equivalent to real salmon, and their FAQ gives a specific number: "4-5 grams of protein per serving (2 ounces, or 55g serving size)." Scaled to a standard 100g comparison, that's roughly 7-9 grams of protein.
Raw salmon, wild or farmed, runs close to 20 grams of protein per 100g — USDA figures put farmed Atlantic at 20.4g and wild Atlantic at 19.8g. That means Wildtype's cultivated salmon currently carries under half the protein density of the fish it's standing in for, gram for gram. The company doesn't dispute this: its own FAQ calls full nutritional parity "a key product development goal," language that only makes sense if the product isn't there yet, and says they're "getting close to these goals" in offerings that will follow the current saku cut.
How it got approved without a full FDA safety review
Wildtype's product cleared the FDA through a "no questions" letter issued May 28, 2025, the first such clearance for cultivated seafood. That's the GRAS — Generally Recognized As Safe — pathway, the same faster, company-run safety-determination route Tallow explained in depth when covering cultivated milk and egg proteins: a company (or a panel it hires) makes its own safety call and can optionally notify the FDA, which responds with a "no questions" letter rather than running its own premarket approval process. It's a legal, commonly used step for food additives — but it means Wildtype's own safety data, not an independent FDA review, is what's actually behind the clearance.
Where you can actually order it
Wildtype salmon is served at Kann in Portland, Robin in San Francisco (tasting menus $119-$219), The Walrus and the Carpenter in Seattle, Kingfisher in Tucson, and barmini in Washington, DC — the restaurant lineup it expanded to after launching at Kann alone. Individual portions elsewhere on those menus run in the $18-28 range. Otoko in Austin served it briefly before Texas's ban on cell-cultured protein sales took effect, and pulled it from the menu. Chefs serving it describe the texture favorably — Robin's Adam Tortosa says "if it didn't taste like salmon, we wouldn't consider it," and The Walrus and the Carpenter's Renee Erickson calls it "dense" with "the fattiness and the deliciousness you're used to in wild salmon."
What this means for your plate
None of this makes Wildtype's salmon unsafe, and the company isn't lying about what's in it — it's all sitting in a public FAQ for anyone who goes looking. The gap is between that FAQ and the Instagram-length version of the story, where "grown from real fish cells" reads like the whole ingredient list instead of the first one.
That gap is exactly what Tallow is built to close, for restaurants and packaged products alike — scan a label and see what's actually inside before you decide what "real" means to you, cultivated salmon or otherwise. Check what's actually in your food on the Tallow app.
Ingredient lists, pricing and restaurant availability above reflect Wildtype's own published materials and public reporting as of this writing and can change without notice. This is not medical advice.