20-Liter (5.28 US Gal) Canadian White Oak Continuous-Brew Kombucha Barrel
Elevate your probiotic tea fermentation from glass jars to authentic wood micro-oxygenation with our 20L (5.28 Gallon) Canadian White Oak Kombucha Barrel. Handcrafted from uncharred, lightly toasted quarter-sawn North American white oak (Quercus alba), this 20-liter vessel is specifically coopered for continuous-brew and secondary-fermentation kombucha, jun tea, and water kefir workflows—imparting subtle oak tannins, vanilla undertones, and a rounder organic acid balance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Volume Capacity | 20 Liters (5.28 gal US — Full 5-Gallon Continuous-Brew Batch) |
| Wood Species | 100% Quarter-Sawn Canadian White Oak (Quercus alba) |
| Interior Finish | Uncharred, Lightly Toasted Food-Grade Oak (Zero Wax, Glue, or Lacquer) |
| Dimensions & Weight | 39 × 31 × 36 cm | 9.0 kg |
| Target Fermentation | Continuous-Brew Kombucha, Jun Tea, Water Kefir & Probiotic Tonics (pH 2.8–3.5) |
| Included Accessories | 20L Kombucha Oak Cask + Wooden Cradle Stand + Acid-Safe Hardwood Spigot + Oak Bung |
Why Ferment Kombucha in Unlined Canadian White Oak?
- Controlled Micro-Oxygenation for SCOBY Vitality: Natural white oak grain breathes gently through the staves, supplying trace dissolved oxygen that supports healthy Acetobacter and osmophilic yeast symbiosis without harsh acetic spikes (Kombucha in Oak Fermentation Guide).
- Tannin Structure & Flavor Complexity: Hydrolysable oak ellagitannins bind harsh green/black tea astringency and lend a refined, champagne-like mouthfeel prior to bottling and carbonation.
- 5-Gallon Batch Capacity + Wooden Spigot: Sized to match a full 5-gallon (19L–20L) commercial or home continuous-brew batch, equipped with a bottom oak dispensing spigot so you can draw off finished kombucha without disturbing the top SCOBY pellicle.
Technical Specifications & Curing Protocol
- Capacity & Dimensions:
20 Liters (5.28 US Gal)• Length390 mm (15.4 in)× Diameter300 mm (11.8 in)• Includes oak stand, wooden spigot, and top bung. - Food-Grade Construction: 100% pure Canadian white oak with exterior steel hoops—zero internal glue, paraffin wax, or plastic liners that could leach into acidic tea ferments (pH 2.8–3.5).
- Explore All Kombucha Sizes: Also available in smaller countertop capacities inside our Kombucha Barrels Collection and Vinegar Barrels Catalog.
Frequently Asked Questions
Why does the 20L Canadian White Oak Kombucha Fermentation Barrel (5.28 Gal Continuous Brew) use a wooden spigot instead of metal?
Acetic acid in vinegar and organic acids in kombucha (pH 2.5–3.5) corrode brass and metal taps. The 20L Canadian White Oak Kombucha Fermentation Barrel (5.28 Gal Continuous Brew) ($220 USD) includes an inert turned hardwood spigot and wide oxygen-exchange bung.
How do I prepare the 20L Canadian White Oak Kombucha Fermentation Barrel (5.28 Gal Continuous Brew) before starting my batch?
Insert the wooden spigot and fill the barrel with cold water for 48 to 96 hours until the Canadian white oak staves swell watertight, then drain and add your wine/cider base and mother culture.
Does the 20L Canadian White Oak Kombucha Fermentation Barrel (5.28 Gal Continuous Brew) ship with a stand and warranty?
Yes, it ships complete with a matching Canadian white oak cradle stand, hardwood spigot, bung, and our 30-day structural seal warranty across the US and Canada.
David MacLeod
The uncharred Canadian white oak and turned wooden spigot on the Kombucha Barrel 20L handle acidic red wine vinegar and kombucha batches without any metallic off-flavors. Cured watertight in two days.
Daniel Kowalski
Authentic traditional cooperage build. Oxygen exchange through the white oak staves accelerated our artisanal apple cider vinegar fermentation beautifully.