How is kombucha brewed commercially?


Kombucha, the effervescent and probiotic-rich beverage, has transcended its status as a homebrewed elixir to become a popular commercial drink. As demand for this tangy tea continues to rise, understanding the intricate process of brewing kombucha on a larger scale becomes essential. In this article, we will explore the commercial brewing process of kombucha, shedding light on the key steps and considerations that contribute to the creation of this beloved fermented beverage.

Ingredients and Sourcing:

Commercial kombucha production begins with sourcing high-quality ingredients. Tea, sugar, and a SCOBY (Symbiotic Culture Of Bacteria and Yeast) are crucial components. The choice of tea and sugar can influence the flavor profile and characteristics of the final product.

Brewing the Tea Base:

The first step involves brewing a large batch of strong tea. This can be black, green, or a combination of both, depending on the desired flavor. The tea serves as the nutrient-rich medium for the SCOBY to thrive.

Adding Sugar and Cooling:

Kombucha brewing equipment

After brewing, sugar is added to the tea to provide the necessary fuel for fermentation. The sweetened tea is then cooled to an appropriate temperature, usually around room temperature.

Inoculating with SCOBY:

The cooled tea is transferred to fermentation vessels, and a portion of a healthy SCOBY from a previous batch or a specialized culture is added. The SCOBY initiates the fermentation process by metabolizing the sugars and creating organic acids, giving kombucha its characteristic tang.


Fermentation is a critical phase in kombucha production. The vessels are covered to prevent contamination, and the tea undergoes aerobic fermentation for an extended period, typically ranging from a week to several weeks. The duration can influence the flavor, acidity, and carbonation levels.

Flavoring and Second Fermentation:

Once the primary fermentation is complete, the kombucha may undergo a second fermentation. During this phase, additional flavors, fruits, herbs, or spices are added to enhance the complexity and taste. This step contributes to the wide variety of kombucha flavors available in the market.

Filtration and Pasteurization:

After achieving the desired flavor profile, the kombucha is typically filtered to remove any sediment or residual yeast. Some commercial producers may pasteurize the product to extend shelf life, although this can affect the probiotic content.

Carbonation and Bottling:

To achieve the characteristic effervescence of kombucha, carbonation is introduced before bottling. This can be achieved through natural carbonation during fermentation or by adding additional carbon dioxide. The bottled kombucha is then sealed and prepared for distribution.

Quality Control:

Rigorous quality control measures are implemented throughout the brewing process. Regular testing for acidity, sugar content, and flavor consistency ensures that each batch meets the brand’s standards.

Packaging and Distribution:

The final step involves packaging the kombucha into bottles or cans. Commercial kombucha is distributed through various channels, including supermarkets, health food stores, and direct-to-consumer sales.


Brewing kombucha commercially involves a meticulous and controlled process that balances tradition with innovation. As the market for this fermented tea continues to expand, commercial kombucha producers play a crucial role in meeting consumer demand for diverse flavors and probiotic-rich beverages. Understanding the intricacies of the commercial brewing process provides a glimpse into the craft behind each bottle of kombucha on the shelves. Cheers to the art and science of brewing this effervescent elixir on a grand scale!

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