How is precision-fermented protein actually made, and where is it approved?

How it is made

Start with the name, because it is doing a lot of work.

Precision fermentation is a relatively new term, and there is no internationally agreed definition of it. [1]

The job itself is narrow. One molecule, made on purpose, by a living factory.

The fermentation happens in a controlled vessel — usually a bioreactor that looks like a brewing tank — and the vessel is filled with bacteria, yeasts, filamentous fungi or microalgae that act as the production host. [1]

A typical precision-fermentation process runs in three phases: technology development, upstream fermentation, and downstream processing. [1]

That is the industry's description. Canada's regulator uses the same idea in plainer words.

Health Canada describes precision fermentation as using micro-organisms to produce nutrients and other metabolites. [2]

The part that decides what the food is, is the separation. What comes out of the tank is a broth, and the useful thing has to be pulled out of it.

What comes out at the end is a purified ingredient: in Remilk's Canadian case, a soluble protein purified from the fermentation media and spray dried into a shelf-stable powder that behaves like milk protein. [3]

That purified ingredient is meant to be sold in bulk to food manufacturers rather than to shoppers. [3]

That last line is the one most announcements skip. The factory is not making dinner. It is making an ingredient that somebody else will put into dinner.

Where it is approved

Canada assesses a food that is new here before it can be sold, and an ingredient made this way goes through that assessment.

In Canada, a food or ingredient that counts as novel under the Food and Drug Regulations needs a pre-market safety assessment before it can be sold. [2]

The public record of that work is a single table. It is worth reading the rows rather than the headlines about them.

Health Canada's table of completed novel-food safety assessments carries a decision dated January 31, 2024 for β-lactoglobulin protein from the yeast strain Komagataella phaffii yRMK-66, proposed by Remilk. [4]

The assessment summary for that protein records that Health Canada had not previously authorised an animal-derived protein produced by microbial fermentation as a novel food. [3]

Two lines in that same summary matter more than the approval itself, and both change what the decision means for a shopper.

That same summary says the ingredient is not intended for sale direct to consumers or for use in infant formula. [3]

Because the assessment treats that protein as equivalent to the one in milk, products that use it have to be labelled as containing a milk allergen. [3] [3]

The table keeps moving, which is why every sentence here carries a date. At the check date, the newest decisions were not all proteins.

The newest decision on the list on the day it was checked was dated July 30, 2026. [4]

One entry on that list is a five-part human-milk oligosaccharide blend produced with engineered E. coli strains, decided on March 5, 2025. [4]

Another entry covers a soy leghemoglobin preparation as an ingredient in simulated meat and poultry products, decided on December 6, 2021 and proposed by Impossible Foods. [4]

The list also carries a 2021 decision for 2′-fucosyllactose in toddler formulas, proposed by Abbott Nutrition. [4]

The other regulator document in this entry is international, and it is about vocabulary and safety practice rather than about approvals.

The FAO report behind the March 2025 announcement collected information on the food-safety frameworks of 35 jurisdictions through two consultations with more than 100 regulatory experts. [1]

The report was released on March 28, 2025, and its authors are researchers at Wageningen Food Safety Research. [1] [1]

One company's own announcement belongs here too — read as an announcement, which is what it is.

Remilk announced in February 2024 that it had received Health Canada's Letter of No Objection, which the company said enabled the use and sale of its animal-free BLG protein in Canada. [5]

The same announcement says the company received a No Questions Letter from the FDA and approval from the Singapore Food Agency in February 2023. [5]

What you can actually buy

This is where the story narrows. We looked for a Canadian route that a person could actually use, and we found one we could check.

On September 18, 2026, Myprotein Canada listed Non-Animal Whey at CA$42.74 for 20 servings and marked it in stock. [6] [6]

The product page attributes that protein to Perfect Day's four-step fermentation process, in which micro-organisms the page calls microflora are fed simple plant sugars and convert them into dairy-identical protein. [6]

The same page says the powder has 20 grams of protein per serving and describes it as animal-free. [6]

We tried to add a grocery route and the maker's own ingredient page. Sobeys answered 403 to our check, and so did Impossible Foods' page about soy leghemoglobin. Both failures are recorded below, and neither route appears as a sentence here, because we could not retrieve a page to quote. A merchant page is also only true on the day it is read: the price and the stock line above are dated observations, not promises.

What this does not show

This is the block we require on every entry that could be read as saying something about an outcome. Elements 1 to 7 apply to every entry; 8 to 12 apply where the entry makes a claim about an outcome, and this one does not, so they are answered explicitly rather than left out.

1. Dates

Every factual sentence carries the source's own date and the date we checked it (18 September 2026). The Health Canada pages are not dated on the page; their content is a table of dated decisions. The FAO report was released 28 March 2025. Myprotein's price and stock line was read on 18 September 2026.

2. What kind of evidence this is

Regulatory documents, one intergovernmental report and one company announcement. No trial and no study establishes any sentence in this entry, and none of these sources reports an experiment.

3. Who was studied

Nobody. These sources do not describe a study population, an age range, a country of subjects or a follow-up period, because they are not studies. Nothing here is evidence about what happens to a person who eats something.

4. The comparator

There is none. This entry does not compare fermentation-made protein with farmed protein, or with anything else.

5. Adjustments

Not applicable: no statistical model is reported in the sources used here.

6. Uncertainty as reported

The Health Canada table is a moving list: a decision can be added after the date we checked, and the newest row we recorded may not be the newest today. The merchant page's price and stock are single observations with no interval. Three sources could not be retrieved at all, and we left out every sentence that depended on them.

7. What no source here can say about a product

No source in this entry measures any product in our directory, its price, its ingredients as sold, or what it does for a person. A regulatory decision about an ingredient is not a statement about a burger, a powder or a portion.

8. Counter-signals

This entry makes no claim about diet and health, so it has no counter-signals of that kind. The two findings that work against a flattering reading carry their sources anyway: the approved Canadian protein is not for direct consumer sale, and it is a milk allergen for anyone allergic to milk.

9. Adequacy caveats

Not applicable. This entry makes no claim about nutritional adequacy for anyone, at any age.

10. What we did not check

No person reviewed or approved these sentences before publication. Three sources were unretrievable (Sobeys, Impossible Foods' ingredient page, and the FDA GRAS notice inventory address carried in our own prompt set). We did not search for a European Union authorisation or a United States approval letter, so this entry says nothing about either market.

11. What would change it

One new row on Health Canada's table, one register that answers our next retrieval, or the maker publishing a page we can quote.

12. What is not on this page

Some sentences written for this entry are not here. They are left out when their source could not be retrieved, when the source did not carry the point the sentence made, when the source contradicted it, or when the wording was too hedged to state plainly. Nothing here rests on a source we could not retrieve. The full list of what was written and left out is in this entry's record, not on this page.

This page is general information about published sources. It is not medical advice, and it is not a substitute for advice from a qualified health professional. No clinician has reviewed it, and we do not know anything about your diet, your medication or your health. If a health question brought you here, take it to a professional who knows you.

Our position

Written by Find My Next Bite · 18 September 2026

Precision fermentation is the most interesting thing in our directory and the least visible on a label. We think the honest way to write about it is to keep three things apart that the marketing around it tends to merge: the technology, the approval, and the thing you can actually buy.

Two of those three are moving quickly. The third moves slowly, and that gap is not a failure of the technology — it is what a new ingredient route looks like from the outside. A page that reported only the first two would read as good news. This one is built so that it cannot.

We are also not going to tell you what to eat. When a question is about your body, we say what the evidence does not show and we send you to a category rather than to a product, because a shop shelf is not a clinician.

Every change this site makes to a sentence it has published is recorded, dated, at Corrections and revisions — what it said before, what it says now, and which kind of change it is. Nothing here is rewritten quietly.

Where to go next

If you came here to understand, the food list is where the useful part starts: the same dated discipline, but pointed at things you can put on a plate. Ordinary links on this site earn us no commission, and no product, maker or merchant paid for a mention in this entry.

Browse the plant-based foods →

See everything in the directory →

Nothing in this entry is for sale, and no promotion or paid placement appears inside it.

Sources

Every numbered sentence above was checked against the source with that number on the date shown. The number links to the entry in this list.

1. Can precision fermentation offer a safe and sustainable future for food production?. Food and Agriculture Organization of the United Nations. intergovernmental. Open the source ↗
   Checked 18 September 2026. Backs 5 sentences in this entry.
2. Cellular agriculture. Health Canada. regulator. Open the source ↗
   Checked 18 September 2026. Backs 2 sentences in this entry.
3. Novel Food Information: β-Lactoglobulin protein from yeast strain Komagataella phaffii yRMK-66. Health Canada. regulator. Open the source ↗
   Checked 18 September 2026. Backs 5 sentences in this entry.
4. Completed safety assessments of novel foods including genetically modified (GM) foods. Health Canada. regulator. Open the source ↗
   Checked 18 September 2026. Backs 5 sentences in this entry.
5. Remilk receives first of kind regulatory green light in Canada. Remilk. company. Open the source ↗
   Checked 18 September 2026. Backs 2 sentences in this entry.
6. Non-Animal Whey (Formerly Whey Forward). Myprotein Canada. merchant. Open the source ↗
   Checked 18 September 2026. Backs 3 sentences in this entry.