Vessels & jars
One lets you see the culture. The other keeps light off it. For a fortnight-long batch that hardly matters; for a continuous brew running for months, it does.
By Scooter M.·Published September 1, 2026
The short answer
Glass for a first vessel and for batch brewing, because seeing the culture is worth more than you expect while you are learning. Ceramic for an established continuous brew, because keeping light off a ferment that runs for months is worth more than looking at it. Either way, check the material is published as food-safe and lead-free.
| Glass | Porcelain | Stoneware | |
|---|---|---|---|
| Capacity | ~2.2 gal | ~2.2 gal | ~2.5 gal |
| Vessel height | 13 in | 10 in | 12-14 in |
| Vessel width | 9 in | 10 in | 10-12 in at shoulders |
| Height with stand | 18 in | 17 in | Not stated |
| Spigot | Stainless | PP5, stainless option | Stainless |
| See the culture? | Yes | No | No |
| Light protection | None | Total | Total |
More than most people expect in the first six months, and less afterwards. Being able to see the liquid tells you the level without opening anything, shows you the pellicle forming so you know the culture took, and — most valuably — lets you spot something growing on the surface early.
Telling mold from a new pellicle is a skill, and it is far easier to acquire when you have watched a surface develop day by day than when you lift a lid on day nine and are confronted with something unfamiliar. For a first vessel, that argument settles it.
The reverse, on a longer timescale. Light degrades a ferment, and a continuous brew is a very long exposure — the same liquid sitting on the same counter for months rather than a fortnight. An opaque vessel solves that permanently.
A glass vessel can be given the same protection with a cloth over it or a spot away from the window, and plenty of people do exactly that. But it is a habit you have to maintain, whereas porcelain is opaque whether or not you remember.
Ceramic glaze can contain lead, and lead leaches into acid. This is a genuine hazard with decorative crocks and antique stoneware, and it is why Kombucha Kamp's guidance is that food-safe pieces use lead-free glazes and that home lead test kits can confirm a specific vessel. Its own porcelain brewer is published as certified lead-free porcelain.
The practical rule: a ceramic vessel sold and specified as a fermentation vessel is fine. A handsome crock from a market stall, with no statement about its glaze, is not — however traditional it looks. Glass has no equivalent question, provided you avoid leaded crystal, which nobody is brewing in anyway.
Glass for visibility, US-made stoneware for the largest published capacity, and certified lead-free porcelain for the shortest footprint.
Kombucha Kamp
About 2.2 gallons of glass on an acacia stand with a stainless spigot, and the only vessel here where you can see the pellicle, the yeast strands and the fill line at a glance.
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Kombucha Kamp
Roughly 2.5 gallons of US-made handmade stoneware with a stainless spigot, and the only vessel here whose dimensions are given as a range because each one is thrown by hand.
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Kombucha Kamp
Certified lead-free porcelain at about 2.2 gallons, opaque so the culture sits in the dark, with a PP5 spigot as standard and a stainless upgrade offered.
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Ranked on the published rubric. Every row jumps to that product's full write-up below; the button goes straight to Amazon.
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 | Score8.5 Kombucha Kamp Glass Continuous Brewer with Stand About 2.2 gallons of glass on an acacia stand with a stainless spigot, and the only vessel here where you can see the pellicle, the yeast strands and the fill line at a glance. | Watching the culture work | 8.5out of 10 | |
| 2 | Score8.3 Kombucha Kamp USA Handmade Stoneware Continuous Brewer Crock Roughly 2.5 gallons of US-made handmade stoneware with a stainless spigot, and the only vessel here whose dimensions are given as a range because each one is thrown by hand. | The largest published capacity | 8.3out of 10 | |
| 3 | Score8.0 Kombucha Kamp Modern Porcelain Continuous Brewer with Stand Certified lead-free porcelain at about 2.2 gallons, opaque so the culture sits in the dark, with a PP5 spigot as standard and a stainless upgrade offered. | Keeping light off a long ferment | 8.0out of 10 | |
| 4 | Score9.1 Anchor Hocking Heritage Hill 2 Gallon Glass Jar with Glass Lid Two gallons of glass whose diameter and height are both published to the eighth of an inch — the rare vessel you can check against a shelf before you buy it. | Scaling up on published dimensions | 9.1out of 10 |
#1 · Watching the culture work
About 2.2 gallons of glass on an acacia stand with a stainless spigot, and the only vessel here where you can see the pellicle, the yeast strands and the fill line at a glance.
Who it is for. A continuous brewer who wants to see what is happening, and who has an open shelf or an island to put it on.
Source: Kombucha Kamp published vessel specifications (capacity, vessel and stand heights, spigot material), kombuchakamp.com/glass-continuous-brewer.html, retrieved 2026-09-01
Skip it if. Your only free counter is under a cabinet. At 18 in with the stand you will not get the cover off, let alone the pellicle out.
#ad No live price feed yet, so no number is shown rather than a stale one. How this is funded.
#2 · The largest published capacity
Roughly 2.5 gallons of US-made handmade stoneware with a stainless spigot, and the only vessel here whose dimensions are given as a range because each one is thrown by hand.
Who it is for. A committed continuous brewer with counter space, who wants the biggest published capacity and a stainless tap in the box.
Source: Kombucha Kamp published crock specifications (capacity, height and shoulder-width ranges, stainless spigot), kombuchakamp.com/usa-handmade-stoneware-continuous-brewer-crock.html, retrieved 2026-09-01
Skip it if. You measure your shelf to the inch. A vessel whose height can be 12 in or 14 in is not the one to buy for a tight gap.
#ad No live price feed yet, so no number is shown rather than a stale one. How this is funded.
#3 · Keeping light off a long ferment
Certified lead-free porcelain at about 2.2 gallons, opaque so the culture sits in the dark, with a PP5 spigot as standard and a stainless upgrade offered.
Who it is for. An established continuous brewer who has stopped needing to look, and wants the culture in the dark.
Source: Kombucha Kamp published vessel specifications (capacity, dimensions, porcelain and PP5 spigot materials, finishes), kombuchakamp.com/modern-porcelain-continuous-brewer-deluxe-package.html, retrieved 2026-09-01
Skip it if. You are new to kombucha. A beginner benefits enormously from seeing the pellicle form and from spotting mold early, and an opaque vessel takes that away.
#ad No live price feed yet, so no number is shown rather than a stale one. How this is funded.
#4 · Scaling up on published dimensions
Two gallons of glass whose diameter and height are both published to the eighth of an inch — the rare vessel you can check against a shelf before you buy it.
Who it is for. Someone scaling past a gallon who would rather measure a shelf than guess, and who does not mind pouring.
Source: Anchor Hocking 69372 published dimensions via foodservice distributor spec sheets (top, bottom and maximum diameter, height), retrieved 2026-09-01
Skip it if. You want a tap. This jar has no spigot and no safe way to add one; buy a vessel built with a valve instead.
#ad No live price feed yet, so no number is shown rather than a stale one. How this is funded.
Every specification cited on this page came from one of these documents, retrieved on the date shown against the product it belongs to.
Jars compared on published dimensions, spigot grade and mouth width — plus the materials that do not belong near kombucha at all.
Glass, ceramic, stainless and plastic ranked for a pH-3 liquid — with the lead question on ceramic and the scratch problem on plastic.
Three continuous brew vessels compared on published capacity, height with stand and spigot material — plus the tapless option.
Which brewing jars publish their valve grade, why 304 stainless is the number that matters, and when a spigot is the wrong idea.
Mold is fuzzy, dry and raised; a new pellicle is smooth, wet and flat. The distinction that decides whether to bin a batch, and how to prevent it.