Materials
Great Qualities
We prioritize the use of high-quality and durable materials. Brew exceptional kombucha confidently, knowing that our materials meet high specifications and are free from any toxins. It's only the best for your booch.
x4 Carbonation Bottles
$72
$80
Save
$8
Upgrade your fermentation.
Our carbonation bottles go beyond standard flip-top bottles with a custom PRV cap that automatically releases pressure at 65 psi - helping prevent bottle bombs and ensuring reliable carbonation. Clean in design, durable in build, and easy to clean.
👉 Pre-Orders expected to ship in Summer 2026.
🚚 Shipping to USA 🗽
- (4) Standard glass bottles: 700ml
- Carbonation Caps with PRV
- Food-grade silicone gaskets
- Stainless steel hardware
- Non-toxic materials
- Includes hex key
1-Year Warranty Included
We’re committed to being transparent and fair throughout the process. Once you receive your KOMBU device, you will be fully covered under our warranty terms if there is any issue related to damage or manufacturer defects.
Thank you for your support and understanding as we work to bring this product to your home.
Add On
Bottled Up
Glass Bottle
The secondary fermentation process in your bottles creates natural carbonation (that delightful fizz!) when sugar or juice is added. Our glass bottles are designed to withstand high-pressure.
Carbonation Cap
Our bottle caps feature a Pressure Relief Valve (PRV) built right into the caps. This feature provides an extra layer of safety by releasing pressure automatically if it reaches 65 psi.
PRV
We’ve carefully integrated the PRV into the cap’s design to maintain our bottle’s original aesthetic while adding this essential functionality.
carbonation cap
Pressure release
Built for disassembly. Looks like a regular bottle cap. Comes apart completely for a thorough clean.
The Carbonation Cap
Go with your gut
Go with your gut