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Kombuchaorganic: Certified Organic by OF&G, UKAS Lab-Tested, Certified Organic Cultures Since 2012
Founded in 2012, Kombuchaorganic has spent over a decade supplying professional brewers, artisan producers, and the trade with the highest quality live cultures. We don’t deal in mass-produced, freeze-dried powders that underperform. Instead, we cultivate highly potent, authentic live starters designed to deliver exceptional depth of flavour, rapid fermentation, and unbeatable consistency in commercial settings.

Established in 2012: With over 14 years of specialist expertise, we are one of the UK’s most trusted names in live cultures, offering unparalleled stability and heritage.
OF&G Certified Organic: Our cultures are fully certified by Organic Farmers & Growers (OF&G). From our ingredients to our specialist unit, we maintain absolute organic integrity so you can confidently label your own retail products as organic.
UKAS Lab-Tested for Safety: Quality and compliance are guaranteed. Every batch is independently tested and verified by ALS Global (a UKAS-accredited laboratory) to meet the highest food safety and performance benchmarks for food production.
100% Live, Active Cultures: Handled with love and care in our dedicated specialist facility, our cultures are fed daily and made fresh to order. They arrive active and ready to brew—no activation required.
A Supply for Life: Built to withstand the demands of a commercial environment, our resilient, mature cultures will thrive and multiply with proper care, providing your business with a perpetual supply.

Organic 45 year old Mature Sourdough Starter

Certified Organic 45 year old Mature Sourdough Starter Rye 80g

Kombuchaorganic

£8.99
(4 reviews) Write a Review
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Size 80g

Kombuchaorganic is a leading supplier of sourdough to bakers/trade. This starter is Very Old and Mature (this is live starter - not freeze dried cheap starter which will likely fail) - 44 year old Lake District Sourdough Starter- Can be used with ANY TYPE OF FLOUR

Fed using traditionally crafted ORGANIC stone ground rye flour from Shipton Mill (certified Organic Flour)

Certified ORGANIC and QUALITY ASSURED and tested by UKAS LAB (ALS Global) 80g Organic Starter with FULL PRINTED INSTRUCTION - more than enough for your base and it allows us to keep free postage

Manufactured with love and care and after sale support is provided. 

Perfect for Artisan Breads, Rye Breads, Spelt Breads, Wheat Breads, Pizza

Started aprox in 1979 in one of the Lake District Organic small bakers - one purchase is a supply for life!

Legal Disclaimer

Kombuchaorganic® is a registered trademark. We offer organically grown cultures we lovingly care for. We offer free trackable service shipping on any UK order. We also post worldwide. All our orders are put into food grade BPA free packaging and then triple sealed. We do not use aluminium packaging due to the health risks. We aim to dispatch the same or next day. We are governed by the Carlisle City Council Environmental Health rules and regulations related to running a food premise and undergo regular inspections to ensure safety and hygiene levels are always at the highest level. We hold the relevant food and hygiene certificates required to operate. Our cultures are regularly tested by UKAS accredited laboratory – ALS Global.

4 Reviews Hide Reviews Show Reviews

  • 5
    The real deal

    Posted by MW on 16th May 2026

    45 years of fermentation history arrived in excellent condition and was active within 24 hours of its first feed. The rye base gives real depth and complexity that younger starters can't replicate. Organic certification, well-packaged, clearly well-tended. If you're serious about sourdough, this is where to start.

  • 5
    Fab

    Posted by Neil on 23rd Sep 2025

    Really fab product :)

  • 5
    Sourdough starter

    Posted by Jon Bailey on 17th Mar 2025

    Fantastic starter have tried my own, others but always come back to this one. I have an old German recipe for a rye sourdough bread with Caraway. My Austrian mother in law says it’s one of the best breads she’s tasted. Highly recommended

  • 5
    Fantastic starter

    Posted by Julie Jump on 2nd Mar 2024

    This was my first attempt to make sourdough and I have been making bread and rolls on a daily basis. It tastes amazing and the starter is really easy to keep alive.

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