What Is Mycoprotein? A Beginner’s Guide to Fungal Protein

Mycoprotein is showing up more often in conversations about alternative protein, but the name is easy to misunderstand. Despite sometimes being grouped with plant-based foods, mycoprotein is not a plant. It is a protein-rich food made from filamentous fungi.

So, what is mycoprotein, how is it produced, and what should a plant-based shopper know before buying it?

Mycoprotein is fungal protein

Fungi form their own biological kingdom, separate from plants and animals. Mycoprotein is made from fungal biomass grown under controlled fermentation conditions. One well-established form is produced from the fungus Fusarium venenatum.

A 2022 narrative review describes mycoprotein as a fungal-derived whole-food protein and filamentous fungal biomass. Researchers have studied it as an alternative protein because it naturally forms a fibrous structure that can be useful in meat-style foods. See the review in Nutrients.

Is mycoprotein the same as mushrooms?

No. Mushrooms and the fungi used for mycoprotein belong to the same broad kingdom, but mycoprotein is not simply ground mushroom. It is produced from microscopic filamentous fungi grown through fermentation.

That distinction matters because the texture, protein content, and manufacturing process are different from ordinary culinary mushrooms.

How is mycoprotein made?

At a simplified level, producers grow the fungus in large fermentation vessels with nutrients it can use for growth. The fungal biomass is harvested and processed into a food ingredient. Because filamentous fungi grow as thread-like structures, the resulting material can have a naturally fibrous texture.

This is one reason mycoprotein can work in products designed to resemble pieces of chicken, mince, nuggets, or other familiar formats.

Is mycoprotein plant-based?

This depends on how the term is being used. Biologically, mycoprotein is fungal, not plant protein. In everyday food marketing, however, fungal proteins are often grouped into the broader “alternative protein” or plant-forward category because they are used as alternatives to animal meat.

For strict vegan shoppers, the product label still matters. A mycoprotein ingredient can be animal-free while the finished food may include egg, dairy, or other animal-derived ingredients depending on the product.

What is mycoprotein made of nutritionally?

Research reviews describe mycoprotein as relatively high in protein and fiber. Its fiber includes fungal cell-wall components such as beta-glucans and chitin. The exact nutrition profile of a finished product depends on the other ingredients added during manufacturing.

A 2023 symposium review published through the Nutrition Society describes mycoprotein as a protein-rich, high-fiber food produced through fungal fermentation and summarizes research on muscle protein synthesis and cardiometabolic markers. You can read it through PubMed Central.

What does the research say about health?

Human studies have investigated mycoprotein in areas including blood lipids, glucose and insulin responses, satiety, and muscle protein synthesis. Reviews describe several promising findings, but they also make clear that the evidence base is still developing and that more research is useful across different populations and longer time periods.

That means mycoprotein should not be treated as a miracle food. It is one protein option with an interesting nutritional profile.

What about allergies?

Fungal protein can cause allergic reactions in susceptible people, just as many other foods can. Anyone with a known food allergy should read labels carefully and follow medical advice specific to them.

Finished products may also contain other common allergens, which is another reason to read the entire ingredient and allergen statement rather than focusing only on the word “mycoprotein.”

Why is mycoprotein getting more attention?

Alternative-protein researchers and food companies are looking for ways to create satisfying protein foods without relying entirely on livestock or on heavily structured plant isolates. Fungi are interesting because their natural filament structure can create a fibrous texture without needing to imitate muscle fibers from scratch.

A 2026 review in the Journal of Food Science describes mycoprotein as a next-generation alternative protein with useful nutritional and functional properties. That growing research interest makes fungal protein an important trend to understand even if it never replaces beans, tofu, or tempeh in your own kitchen.

Looking for more protein sources without tofu? Our 15 plant-based protein alternatives includes mycoprotein alongside legumes, seitan and other choices. Compare packaged products using the meat-alternative ingredient guide.

Mycoprotein vs precision fermentation

These technologies are easy to confuse, but they are not the same thing. With mycoprotein, the fungal biomass itself becomes the food protein. Precision fermentation often uses microorganisms as production systems to make a specific target ingredient, such as a protein that is then separated and used in food.

For a full explanation of that second approach, read our precision fermentation guide.

Mycoprotein vs tofu and tempeh

Tofu and tempeh are soy foods. Mycoprotein comes from fungi. All three can serve as protein foods, but their textures and processing are different.

Tempeh is made by fermenting soybeans into a firm cake, while tofu is made by coagulating soy milk. Mycoprotein is grown as fungal biomass through fermentation.

What should shoppers look for?

• Check whether the finished product is vegan if that matters to you.
• Read the allergen statement.
• Compare protein, sodium, saturated fat, and fiber between products.
• Remember that the nutrition of a prepared nugget or sausage reflects the whole recipe, not only the mycoprotein ingredient.

Our plant-based meat label guide gives a step-by-step system for comparing packaged alternatives.

Bottom line

Mycoprotein is a fungal protein made from filamentous fungi grown through fermentation. It is neither a plant nor a mushroom in the everyday culinary sense, although it often appears alongside plant-based and alternative-protein foods. Its fibrous structure, protein content, and developing research base make it an important part of the next generation of meat alternatives—and a useful term for shoppers to understand.