Kefir or kefir-like? Why understanding the difference matters 

Kefir is fermented using cultures derived from kefir grains, preserving the natural symbiosis between bacteria and yeasts. Kefir-like products use selected lactic acid bacteria, with or without added yeast. The difference shows up in flavor, carbonation, texture and how consistently the product can be reproduced at commercial scale. As well as in labeling, since kefir-like products cannot be labeled as kefir.

What to Know about kefir and kefir-Like Products

For many consumers, kefir has become synonymous with gut health, live cultures and traditional fermentation.

Whether they discover it in the chilled dairy aisle of a supermarket in London, a convenience store in Bangkok, or a traditional dairy cabinet in Warsaw, consumers increasingly look for the same combination of authenticity, functionality, and great taste. What they are less likely to appreciate is that products carrying the name ‘kefir’ can be produced in very different ways. These differences have important implications for manufacturers. They are particularly relevant when developing products for different markets.

As the global kefir category continues to expand, understanding the distinction between kefir and kefir-like products has become far more than a regulatory consideration. It influences everything from flavor and texture to production efficiency, shelf life and the ability to meet local consumer expectations.

Manufacturers looking to grow within the category therefore need to think beyond product labeling and consider how the fermentation system itself shapes the final consumer experience. 

Kefir: more than a fermented milk drink

Kefir is unlike almost any other cultured dairy product.

Kefir is created through the symbiotic fermentation of milk using kefir grains. These kefir grains are complex biological structures. They are made up of proteins, polysaccharides, lactic acid bacteria, and yeasts. These microorganisms have evolved to function together. They form a living microbial community. 

During fermentation, each group of microorganisms performs a different role. 

• Lactic acid bacteria generate acidity and contribute to the clean, fresh flavor associated with cultured dairy products.
• Meanwhile, yeasts develop the characteristic aromatic notes and gentle carbonation that distinguish kefir from yogurt or cultured milk drinks.

The interaction between these microorganisms creates a layered sensory profile. It combines slight acidity, subtle yeast notes, creamy texture, and a delicate fizz. This gives kefir its unmistakable character.

It is precisely this biological complexity that has made kefir such an enduring product for centuries, but it is also what makes it significantly more challenging to reproduce consistently at commercial scale. 

Understanding the difference: kefir vs kefir-like products    

While kefir continues to define the category, the rapid global growth of fermented dairy has encouraged manufacturers to develop a broader range of kefir-like products. These products are designed to meet different consumer preferences and production requirements.

• Kefir is fermented using cultures derived from kefir grains. These preserve the interaction between bacteria and yeasts, typically producing a more pronounced yeast character, stronger flavor development, and higher levels of carbonation generated during fermentation
• Kefir-like products, by comparison, are produced using carefully selected combinations of lactic acid bacteria, with or without added yeast. This allows manufacturers to achieve specific flavor profiles, texture characteristics, and fermentation performance while delivering greater production consistency.

What differs	Kefir	Kefir-like
Fermentation system	Cultures derived from kefir grains, preserving the symbiosis between bacteria and yeasts	Selected combinations of lactic acid bacteria, with or without added yeast
Flavor	More pronounced yeast character and stronger flavor development	Profile can be targeted to the market, often milder and creamier
Carbonation	Higher levels generated during fermentation	Can be dialed up or down to suit local expectations
Production consistency	More technically demanding to reproduce consistently at scale	Greater consistency and predictability at commercial scale

Neither approach is inherently superior because each addresses different commercial objectives.

In markets with a long history of kefir consumption, consumers often expect fuller flavor and effervescence. They also expect the distinctive sensory complexity associated with traditional products. In newer markets, many consumers prefer a milder, creamier beverage. They often favor a softer flavor profile and less carbonation. This is particularly true when kefir is positioned alongside drinking yogurts. It also applies when it is positioned as a functional dairy beverage.

Understanding those regional differences is becoming increasingly important as manufacturers expand internationally and adapt products for local tastes. 

Regulations provide a framework, but markets define success 

Codex Alimentarius provides an internationally recognized definition of kefir as a fermented milk product. It is produced using starter cultures prepared from kefir grains. These cultures contain both lactic acid bacteria and yeasts living in symbiosis. Although this provides an important reference point, individual countries and regions often apply different standards. Consumer expectations may also be interpreted differently. This creates a more complex commercial landscape for manufacturers.

In practice, successful product development depends on meeting regulatory requirements and understanding consumer expectations. It also depends on understanding what consumers expect a kefir product to taste and feel like.

A traditional, highly carbonated kefir may perform well in one market. Elsewhere, it may require a significantly milder sensory profile. Manufacturers introducing kefir for the first time may prioritize consistency and shelf life. They may also prioritize approachable flavor over absolute authenticity. 

Rather than viewing regulation as a constraint, leading manufacturers increasingly use it as a framework within which they can tailor products to local consumer preferences while maintaining the integrity of the category. 

Turning complexity into opportunity 

The challenge for manufacturers is therefore not deciding whether to produce kefir or a kefir-like product, but determining which fermentation approach best aligns with their commercial ambitions and the consumers they are trying to reach.

That decision extends well beyond culture selection.

• Fermentation temperature influences flavor intensity and gas formation
• Maturation enhances the characteristic sensory profile
• Cooling rate, milk composition and process design all contribute to texture, acidity and overall product stability. 

Small changes in processing conditions can produce noticeable differences in flavor, mouthfeel and carbonation, making fermentation management a critical part of product development rather than simply a manufacturing step. 

Navigating the future of kefir with advanced culture Solutions 

This is where technical expertise becomes particularly valuable. Manufacturers increasingly need partners capable of helping them navigate not only regulations but also the complex relationship between culture selection, processing conditions and consumer expectations. 

IFF has developed one of the industry’s broadest portfolios of kefir culture solutions.

• These range from freeze-dried cultures produced from authentic kefir grains to carefully designed multi-species culture systems.
• These solutions support the production of kefir-like products.
• Combined with extensive application expertise, they offer significant flexibility.

This enables manufacturers to tailor flavor intensity, texture, carbonation, and fermentation performance. Solutions can be adapted to the needs of individual markets. At the same time, manufacturers can maintain consistent production and product quality.

As the kefir category continues to evolve, the distinction between kefir and kefir-like products is likely to become even more important, not because one approach will replace the other, but because manufacturers will increasingly need the flexibility to deliver authentic products that reflect different consumer preferences around the world. 

More about our Fresh Dairy Cultures & Enzymes.