Reddit reviews Ball Mason Canning Jar Rings & Lids - Pack of 20 - Wide Mouth Jar Ring & Gasket Lids for Kerr/Ball/Mason Jars
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Set of 20 Lids & RingsFits Wide Mouth Canning Jars
Mason jars with the traditional canning tops are meant for holding a vacuum seal (i.e., negative pressure) in a mason jar, which is the opposite of what you want for kombucha F2. Since the yeast in kombucha will produce excess CO2 in an anaerobic environment, you want a vessel that can contain positive pressure on its seal, like these flip-top bottles.