5 Fitted Cloth Covers for Kombucha Jars
Bucha Brewers cloth jar covers are designed to give an aerobic kombucha brew the airflow it needs while helping keep out fruit flies, debris, and other unwanted contaminants. Each 7-inch square cover is sized for the mouth of a standard 1-gallon brewing jar and comes with a rubber band for a snug fit.
Key Features
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Complete 5-pack: Includes 5 cloth kombucha covers and 5 rubber bands.
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Tight, breathable weave: Supports airflow while creating a more effective barrier than loosely woven material.
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Custom 7-inch size: Fits standard gallon jars without the bulky excess fabric obscuring your view of the brew-- common with 10-inch covers.
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Unbleached natural cotton muslin: Made from durable, hand-cut, 100% unbleached cotton.
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Reusable and compostable: Use for many brews to come: gently hand-wash and air-dry the covers as needed, and compost at the end of its usable life
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Useful for other aerobic ferments: Also suitable for kefir, gingerbug, and additional ferments that require airflow.
Will These Covers Fit My Jar?
The 7-inch covers fit most jars with a capacity of 1 gallon or less. They work best when the jar mouth is 5 inches in diameter or smaller.
Why Fit and Fabric Matter
Primary kombucha fermentation needs oxygen, so the cover must be breathable. It also needs to be secured tightly enough to help block insects and airborne debris. The fitted size reduces excess fabric, makes the rubber band easier to secure, and creates a cleaner appearance on the brewing jar.
Frequently Asked Questions
Can I reuse the covers?
Yes. Can be used for many brews. If soiled, gently hand-wash them and allow them to air-dry fully before placing them over a new brew. Compost at the end of its useful life.
Do the rubber bands come with the covers?
Yes. The package includes five cloth covers and five rubber bands.