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Live Milk Kefir Grains: Premium Irish Heirloom Cultures


14.0035.00

Transform your gut health with Ireland’s highest rated, lab tested milk kefir grains. Unlike store bought dehydrated packets, our grains are shipped always fresh in a nutrient rich liquid starter to ensure they arrive active and ready to brew.

  • True Heirloom Grains: One time purchase; they grow and multiply forever.
  • Fast Shipping: Shipped fresh to ensure quick activation.
  • Community Trusted: Join 5,000+ Irish home brewers.

Description

Probiotic Rich

Crafted through natural fermentation for superior gut support.

Lab Tested Purity

Regularly lab screened to ensure 100% pathogen free purity.

Simple and Versatile

Easily to brew at home with minimal equipment.

Unlock Digestive Mastery with Authentic Heirloom Milk Kefir Grains

NutriBrew’s heirloom milk kefir grains are direct descendants of original Caucasus cultures. These self propagating grains transform ordinary milk into a bioavailable, nutrient dense elixir with billions of CFUs, far surpassing pasteurised, store bought alternatives.

Fresh milk kefir fermented in a glass jar creamy texture - NutriBrew Ireland
A glass of finished, probiotic rich milk kefir showing smooth consistency from NutriBrew heirloom cultures

Microbial Heritage: The NutriBrew Distinction

Skip mass produced grains that lack biodiversity. NutriBrew’s live heirloom cultures are lab screened for 40+ distinct probiotic strains, ensuring premier potency and structural integrity.

  • Research Backed: Research in the Journal of Dairy Science shows that the bioactive compounds in Kefir may help alleviate inflammatory conditions and support cellular health.
  • Verified Genus Groups: Known species identified in kefir grains include Lactobacilli, Streptococci, Lactococci, Acetobacter, and various beneficial yeasts.

NutriBrew Mastery Tip: The Fat Content Factor

To accelerate fermentation and maximize grain health, always use full fat animal milk. The higher fat and natural lactose content provide the essential nourishment required to keep your cultures plump, resilient, and high yielding. Avoid ultra-high temperature (UHT) processed milks, as the altered protein structure can weaken the grains over time.

Master the Craft of Authentic Home Brewed Milk Kefir

We provide a generous amount of live milk kefir grains, shipped in a nutrient rich dairy solution to ensure they arrive active, resilient, and ready for immediate fermentation.

  • Yield: 10 grams of grains will produce approximately 500ml of Milk Kefir every 24–48 hours.
  • Growth: Over time, your grains will grow and multiply, allowing you to brew larger batches or share them with friends.
  • Simplicity: Simply place the grains in whole milk, cover loosely, and leave out of direct sunlight in a warm room (20°C to 22°C) for 24 hours.

The Bio Activity Advantage: NutriBrew vs. Store-Bought

NUTRIBREW Microbial Count
Dozens of billions of CFUs per cup
Store-bought: Industrial kefir use isolated strains for shelf stability, sacrificing microbial diversity & potency.
NUTRIBREW Strain Diversity
Complex Poly-Culture (Bacteria & Yeast)
Store-bought: Formulated with 2–5 lab-grown strains, lacking the resilient complexity found in heirloom colonies.
NUTRIBREW Sugar Content
Near Zero (Cultures consume sucrose)
Store-bought: Frequently packed with added sugars or flavourings to mask the bitterness of lower quality ferments.
NUTRIBREW Vitamin Synthesis
Bioavailable B-Complex (B2, B12) and Vitamin K2 synthesized through live fermentation.
Store-bought: Relies on synthetic vitamins added back post processing to replace nutrients lost during pasteurisation.

Milk Kefir FAQs & Troubleshooting


Yes. Our grains are harvested fresh and shipped in a nutrient rich solution that keeps them in a “slowed” metabolic state. They can safely travel for up to 14 days without any loss in vitality.


You could start with 500ml per day. However, because these are live heirloom grains, they will grow and multiply over time. Within weeks, you’ll be able to produce liters of kefir daily from this single purchase.


You only need basic kitchen items: a glass jar, a non metal strainer (plastic or nylon), and a wooden or plastic spoon. No expensive fermenting kits are required to achieve professional results.


Like any living culture, kefir grains undergo a brief acclimation period to synchronize with your local milk and kitchen temperature. This ‘settling in’ phase typically lasts 2–3 batches. As the grains wake up and adjust, their potency will increase with every brew. If you have any questions during this first week, our expert support team are here to guide you.

Master Your Fermentation Journey

Scientific References:

Frontiers in Microbiology: “The Probiotic Potential of Kefir” (2019)
Journal of Dairy Science: “Anti-inflammatory and Antioxidant Properties of Kefir” (2018)

Additional information

Weight N/A
Sizes

5g (makes 250ml), 10g (makes 500ml), 20g (makes 1L)