Raw Materials That Shape Kefir’s Quality
Kefir is more than a simple fermented drink—it is the delicate result of biological interactions between microorganisms and their ingredients. Every step of production begins with what is placed in the fermentation vessel, and that choice directly influences the taste, texture, and probiotic efficacy of the final product. Raw materials are not mere components; they are the directors of the entire fermentation process.
At Rokabo, we select heritage tibicos grains that have been carefully maintained since 2019. These grains ensure a high diversity of microbial strains and stable fermentation quality. The raw materials do not only affect flavour—they determine how many strains of beneficial microorganisms can thrive in each batch.
Milk and Sugar: The Energy Source for Microbes
Milk serves as the primary medium where tibicos grains live and multiply. The type of milk used—cow, goat, or even plant-based—affects the structure of kefir in terms of both creaminess and taste. Each milk variety contains different levels of protein, fat, and natural sugars, and each microbial strain responds differently to this environment.
Lactose and glucose in milk are the main energy sources for fermentation. The right amount of sugar allows microorganisms to work at full potential without over-fermenting, which would create an overly sour or flat taste. Our kefir is fermented with 2.1 g of sugar per bottle—a precise amount designed to feed the microbes efficiently while leaving minimal residual sweetness.
Tibicos Grains: The Heart of the Microbial Ecosystem
The tibicos grains used in kefir production are not merely a catalyst—they are a complex ecosystem of up to 36 microbial strains, including Lactobacillus, Bifidobacterium, Streptococcus, Saccharomyces, and Kefiranofaciens. Each strain plays a specific role, such as producing lactic acid, breaking down sugars, or creating natural preservatives.
By using grains with a long lineage and continuous care, we maintain a stable microbial diversity. This consistency ensures that every bottle of kefir delivers a living community of probiotics at approximately ~12 billion CFU/ml, even after two 24-hour fermentation cycles.
pH Balance and the Art of Fermentation
The final pH of our kefir is 4.32—a value that supports the survival of beneficial microorganisms while keeping the acidity gentle and pleasant. This pH results from the coordinated work of multiple strains producing lactic acid and other organic acids.
The double fermentation process (each cycle lasting 24 hours) allows the microbes to fully adapt and function, optimising sugar breakdown and the creation of compounds that support gut health. A precisely controlled pH is the outcome of both quality ingredients and exacting technique.
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