Storing Sourdough Properly: Why Borosilicate Glass Is Superior to Standard Jam Jars
Many new sourdough bakers reach for an empty jam jar when making their first starter – it’s handy and seems to work. But if you want a lively, reliable, and healthy starter, the choice of container matters. Borosilicate glass offers clear advantages.
Why the Right Jar Matters
A sourdough starter is a living microcosm. It thrives when its environment is stable, hygienic, and easy to observe. The wrong container, however, can hinder growth, complicate care, and increase the risk of contamination.
Borosilicate Glass vs. Jam Jar – A Quick Comparison
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The Advantages in Practice
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Temperature resilience: Thanks to its low coefficient of expansion, borosilicate glass remains dimensionally stable and safe even during rapid changes (e.g., fridge ↔ warm countertop).
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Visual control: Crystal-clear and transparent, your starter can be checked at any time – a must for healthy fermentation.
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Hygienic safety: The smooth surface minimizes germ formation, which is especially important when working with sourdough on a daily basis.
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Ease of use: Opening, shape, and material are designed for daily use – feeding, stirring, and cleaning become a pleasure.
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Reliability and appearance: Borosilicate glass not only conveys craftsmanship but also elevates your baking routine to a professional level.
