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5 Best Continuous Brew Kombucha Jars 2025: Spigot Safety Guide

Continuous Brew (CB) is the holy grail of kombucha production. Instead of cleaning bottles every week, you have a massive 5-8L vessel on your counter. You tap off a bottle from the spigot, top it up with sweet tea, and the cycle continues forever.

However, there is a hidden danger in the cheap beverage dispensers you see at high street shops: The Spigot (Tap). Kombucha is acidic (pH 3.0). This acid corrodes low-quality metals and plastics, leaching zinc, aluminum, and BPA into your daily drink. We tested the market to find the safest vessels that use 304 Stainless Steel or food-grade plastics.

A large glass kombucha jar with a stainless steel spigot.
#1 Best Overall (The Classic)
Kilner Drinks Dispenser 8L

1. Kilner Drinks Dispenser (8 Litre)

★★★★★ (Industry Standard)
Material Science: Made from high-quality soda-lime glass which is chemically inert and does not absorb odors. The walls are thick enough to withstand the thermal shock of warm tea.

Kilner is the brand everyone trusts for a reason. The glass clarity allows you to inspect your SCOBY health easily. The 8L size is perfect for Continuous Brew, providing a steady supply for a family of four. Warning: The stock tap is plastic. We strongly recommend upgrading to a 304 Stainless Steel spigot (sold separately) for long-term safety.

Pros

  • Wide neck makes cleaning easy
  • Thick, durable glass
  • Perfect size for CB method

Cons

  • Stock plastic tap is mediocre
  • Heavy when full
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#2 Best Professional (The Tank)
SS Brewtech Brew Bucket

2. SS Brewtech Mini Brew Bucket

★★★★★ (Indestructible)
Material Science: Constructed entirely from 304 Food Grade Stainless Steel. It is impervious to acid corrosion, blocks UV light (preventing skunking), and is easy to sterilize.

If you are tired of breaking glass jars, switch to steel. This is professional brewing equipment scaled down. It has a conical bottom which collects yeast sediment, keeping your tap clear. Because it is steel, you can use a magnetic heating stir-plate if you want to get fancy. It is expensive, but it will last forever.

Pros

  • 100% Stainless Steel (Zero leaching)
  • Conical bottom collects sediment
  • Blocks UV light

Cons

  • You can't see the SCOBY growing
  • Expensive
Check Price on SS BrewTech
#3 Best Design (The Stylish One)
Mortier Pilon Kombucha Jar

3. Mortier Pilon Fermentation Crock

★★★★☆ (Designed for Countertops)
The Innovation: Features a specially designed breathable lid mesh that keeps fruit flies out while allowing optimal oxygen exchange for the Acetobacter.

Most brewing jars are ugly. This one is designed to look good in a modern kitchen. It uses a specialized glass shape and a ceramic-look plastic collar (BPA free). The tap is high quality. It’s smaller (5L), making it better for couples or single drinkers. The included wax pencil lets you write the brew date directly on the lid.

Pros

  • Beautiful aesthetic
  • Integrated filter mesh
  • Rewritable lid label

Cons

  • Smaller capacity (5L)
  • Tap flow rate is slow
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#4 Best Stoneware (Traditional)
Humble House Sauerkraut Crock

4. Humble House SAUERKROCK

★★★★☆ (Temperature Stable)
The Physics: Thick ceramic walls provide high thermal mass. This means the jar resists temperature fluctuations in drafty houses better than thin glass.

While technically designed for sauerkraut, many brewers swear by ceramic crocks for Jun Tea. The opaque walls block all light (protecting nutrients) and the heavy ceramic stabilizes the temperature. Note: This is a batch brew vessel (no spigot), so you have to ladle the tea out, which some purists prefer to avoid spigot cleaning issues entirely.

Pros

  • Excellent temperature stability
  • Blocks 100% of light
  • No spigot to clog or leak

Cons

  • No spigot (requires ladling)
  • Heavy and breakable
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#5 The Essential Upgrade
304 Stainless Steel Spigot

5. DozyAnt 304 Stainless Steel Spigot

★★★★★ (Safety Must-Have)
Metallurgy: "304" refers to the grade of steel (18% chromium, 8% nickel). It is non-magnetic and highly resistant to organic acids like acetic acid.

This isn't a jar; it's the part that saves your jar. If you buy a cheap dispenser from a home goods store, it likely has a plastic tap painted silver. That paint will flake off into your drink. Buy this £12 replacement. It fits almost all standard dispenser holes (16mm). It has a quarter-turn ball valve that never drips and won't corrode.

Pros

  • 100% Acid resistant
  • Quarter-turn ball valve (smooth flow)
  • Includes silicone washers

Cons

  • Requires installation (easy)
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The Cloth Cover Rule

Never use the glass lid that comes with your jar during fermentation! The SCOBY needs oxygen. If you seal the lid, you risk exploding the jar or killing the bacteria. Use a tight-weave cotton cloth secured with a rubber band to keep fruit flies out.

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