Vegan
How we decidePotato protein fining is vegan. Avebe in the Netherlands recovers the protein from the wastewater of potato starch production and sells it as Solanic, which brewers use to hold a beer's head and wineries use to fine. Heineken has trialed it as a complete replacement for isinglass, and no beer or wine label records fining at all.
Not required on labels
Not required on beer or wine labels.
- Source
- Isolated from potato starch manufacturing waste water (potato fruit water). Entirely plant-derived.
- Used In
- Beer foam stabilisation (excellent foam-positive protein), wine fining, some food applications.
- How to Avoid
- No need to avoid — potato protein is vegan.
Editorial Notes
Solanic potato protein (produced by Avebe, Netherlands) has gained significant traction in the brewing industry as a vegan-friendly head retention agent and fining protein. Several major breweries including Heineken have trialled potato protein fining as a complete replacement for isinglass. The protein is a byproduct of the potato starch industry.
In depth
How Potato Protein Is Recovered
Potato protein used in beverage processing is a byproduct. Nobody grows potatoes for it. The protein is recovered from the water left over when potatoes are processed into starch. That liquid, often called potato fruit water or potato juice, was historically treated as a waste stream. Modern starch producers extract and purify the soluble proteins it contains, concentrating them into a functional isolate.
Recovery separates the soluble proteins from the liquid. Purifying and drying turn them into a powder. The protein originates from a plant, and no animal-derived processing aids are used to isolate it.
Avebe, a Dutch cooperative, markets a well-known range of these potato proteins under the Solanic name. The byproduct route lets potato protein be positioned as a sustainability-minded ingredient. It uses material that would otherwise be discarded.
Why It Is Used in Brewing and Winemaking
In brewing, potato protein is used mainly as a foam-positive protein that supports head retention. It has also been promoted as a plant-based fining protein that helps clarify the liquid. Traditional clarifying agents are animal products. Isinglass comes from fish and gelatin from animal collagen. A plant protein that performs a comparable job is attractive to producers seeking a vegan-friendly process.
Fining agents bind to haze-forming particles, yeast, and other suspended solids. Those solids settle out and are removed. The product comes out clearer. Potato protein does the same job without an animal source, which is one reason it has drawn interest as a replacement for isinglass.
In winemaking, plant proteins including those from potato and pea are used similarly to help remove haze and adjust clarity. The protein works as a processing aid. Most of it leaves with the sediment. The finished beverage does not list it as an ingredient.
Labels, Vegan Status, and Alternatives
Potato protein used as a fining or foam agent generally does not appear on beer or wine labels. Processing aids are typically not required to be listed the way ingredients are. The same rule hides animal-derived finings such as isinglass and gelatin, which historically made it difficult for consumers to know whether a drink was vegan.
When a producer switches from isinglass to potato protein, the result is a beverage clarified without animal products. The label will not say so. Verifying vegan status usually means checking a producer's own statements, a certification mark, or a database such as a vegan beer and wine directory.
Other plant-based fining options include pea protein, other vegetable proteins, bentonite (a clay), silica gel, and activated carbon. They differ in how aggressively they clarify and in their effect on flavor and foam. Producers choose among them based on the specific beverage and desired result.
Frequently asked questions
Is potato protein vegan?
Yes. Potato protein is entirely plant-derived, recovered from the water left over during potato starch production. No animal-derived materials are part of the ingredient itself, which is why it is used as a vegan alternative to fish-based isinglass and animal-based gelatin.
Why is potato protein used in beer?
Two reasons. Potato protein is foam-positive, so it supports head retention. It has also been promoted as a plant-based fining protein for clarification. Since it is not animal-derived, some brewers see it as a way to make their beer suitable for vegans while maintaining foam stability.
Does potato protein appear on the label?
No. As a processing aid, potato protein is generally not required to be listed on beer or wine labels. The same rule keeps animal-based finings like isinglass off the list. Checking labels alone will not confirm whether a drink was clarified with it.
What can be used instead of isinglass?
Plant-based fining options include potato protein, pea protein, bentonite clay, silica gel, and activated carbon. All clarify beer and wine without fish-derived isinglass. They differ in how they affect clarity, flavor, and foam, so producers select based on the specific beverage.