Kefirko
Slovenian manufacturer Borgla's reusable glass fermenters and complete kits for brewing kombucha, kefir, sourdough and cheese at home.
Slovenia·✓ Verified
Why it passes our bar
Designs and manufactures its own fermenters in Slovenia — non-reactive glass jars with stainless-steel spigots and wooden stands built for "endless batches" that "reduce packaging waste" by replacing single-use store-bought drinks. Kits ship with the company's own organic kombucha starter cultures, organic teas and organic cane sugar (site claims "eco-certified cultures"; no third-party certification named).
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