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Little Big Mouth Bubbler® Glass Fermenter

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Little Big Mouth Bubbler® Glass Fermenter

SKU: 41308

The perfect small batch primary fermentor. The Little Big Mouth Bubbler® fermentor holds 1.4 gallons - offering nearly a gallon of extra headspace. Cut down on cleaning with the Little Big Mouth Bubbler® and simply wipe it clean after primary through the wide opening. To top it all off, the Little Big Mouth Bubbler® makes a great, inexpensive 4L yeast starter vessel!


The perfect small batch primary fermentor holds 1.4 gallons - offering nearly half a gallon of extra headspace.

Cut down on cleaning with the Little Big Mouth Bubbler® and simply wipe it clean after primary through the wide opening.

To top it all off, the Little Big Mouth Bubbler® makes a great, inexpensive 4L yeast starter vessel!

Kit Includes:

  • Little Big Mouth Bubbler® Glass Fermentor 
  • Single-Port Lid 
  • Rubber Stopper
  • Does not include an airlock

Details & Instructions

Additional Information

4.7 / 5.0
31 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Not working for me
Not working for me. Wine foaming, NO CO2 apparent relaease
August 16, 2019
2 months ago
Exactly what I needed
I make mead and fruit wines and using a 1 gallon carboy was always a bit of a pain because after the first fermentation, racking to a new container sometimes meant leaving a fair amount of product behind and having head space. With this I can make over a gallon and rack a full gallon to the carboy right to the brim. It is easy to oxygenate before primary, has a nice wide top and seems sturdy. I bought another one and I'll be buying more. For this price this is an amazing fermenter.
July 10, 2019
3 months ago
great fermentor
I did my first batch of robust porter and it was so much easier to do versus a 1 gal. jug. Pouring wort into jug was a balancing act having to use a funnel and a strainer. With the big mouth just set the strainer right in the opening. Clean up is a breeze, no carboy brush needed. Two points of improvement I wish the stopper hole was big enough for a mini- siphon and 1 gal. markings. Other than that a great fermentor. Dave H.
March 29, 2019
7 months ago
Great product for fermentation and degassing. GREAT
Excellent product. It works great in primary fermenting and degassing. No Mess. Thanks Midwest.
March 25, 2019
6 months ago
Big mouth bubbler
Like this one better foa gallon batch because od the opening and muvh easier to clean.
March 19, 2019
over 2 years ago
I like to make wine in small batches and these are perfect. Save the box to place it back into for fermenting in the dark. I would say I would order another but I ordered ten and that should do for awhile. Thanks.
December 20, 2018
10 months ago
Very easy to use when adding fruit to mead during the secondary.
October 28, 2018
12 months ago
So so
I would like this product a lot better if it was side drilled for a tap. Using an autosiphon is a nightmare.
October 23, 2018
1 year ago
I strongly recommend this bubbler for anyone who wants to make small batches.
I like it because it is very easy to clean, it also has a good seal, and work's exelent. For making a small batch of wine, or cider it's perfect. I highly recommend, and it makes a great addition to your brewing equipment
September 21, 2018
1 year ago
Naturally fermented pickles,Sauerkraut
Works great for making naturally lacto-fermented vegetables.
September 3, 2018
over 3 years ago
Customer Q&A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 28 answers
what size tubing fits in the port in the lid?
A shopper on Aug 9, 2019
BEST ANSWER: For a snug fit, you will need 15/16 OD tubing or a pre-drilled rubber stopper (1 1/16) top dia.) with a 1/4 inch hose connector.
Do you sell an extra replacement lid?
A shopper on Sep 12, 2018
BEST ANSWER: We do not sell replacement lids at this time. Cheers!
I've been doing my kombucha second fermentation in flip-top bottles to make it fizzy. Can the little mouth bubbler withstand enough pressure to make the kombucha fizzy?
A shopper on Apr 7, 2018
BEST ANSWER: I would be hesitant to pressure ferment in a glass container. Even if it could withstand a little pressure, I don't think that the lid seal will hold the pressure inside. I would recommend carbonating in the bottle and place in the fridge as soon as possible to slow any additional carbonation.
Is the stopper solid or drilled?
A shopper on Nov 14, 2017
BEST ANSWER: The stopper is solid. If you want to use an airlock, you have to buy it separately.
What size/dimension is the jar?
A shopper on May 16, 2017
BEST ANSWER: It's just about 8 inches in diameter, and about 10.5 inches tall.
The gaskets on these are styrofoam. Once they go what can i use as replacement? Thanks!
A shopper on May 2, 2017
BEST ANSWER: This kit contains five replacement gaskets:
Big Mouth Bubbler® Extra Lid Gaskets - 5 Count (Original Screw-on Lid Only)
Big Mouth Bubbler® Extra Lid Gaskets - 5 Count (Original Screw-on Lid Only)
Is the outside glass at the top, where the lid screws on 5"?
A shopper on Mar 23, 2017
BEST ANSWER: I'd have to get mine out and measure it to be certain, but I would say that it is at least 5". It appears to be about the same diameter as the regular big mouth bubbler. For small wine batches this is just the ticket.
Does this have a flat bottom? One that a stir bar could spin on for yeast starters?
A shopper on Mar 6, 2017
BEST ANSWER: The bottom is not flat. I don't see a magnetic stirrer working very well.
What is the plastic translucent cap that ships inside of it for?
A shopper on Nov 16, 2016
BEST ANSWER: It snaps on the lid opening and works like an airlock.
What size stopper does it require?
A N on Jul 20, 2016
BEST ANSWER: The Little Big Mouth Bubbler does come with a stopper; it uses a #5.5 stopper in the hole on the grey lid. -Mike W, Midwest Supplies
is there a hole in the lid for a stopper and air-lock?
P E on Jul 14, 2016
Love that these came back in stock! I ordered two and they just arrived today.

Quick question: do you guys plan on selling the carry harness that goes with the LBBB or know where I can get one?

Empty, the jar already has a bit of weight. Add a gallon or so of liquid and picking them up to move them around (especially up off the ground) may lead to breakage, clumsiness, etc...
M I on May 11, 2016
BEST ANSWER: We don't have one, or know of one that would work for that model. I'm not sure if there is a plan to make a carrier for the Little Big Mouth, but I will suggest it to our product development team! Thanks for the suggestion, have a good day! -Mike W, Midwest Supplies
Can you please explain this lid? Is it a solid plastic lid, or does it come with a hole in it?
renee c on Nov 28, 2015
BEST ANSWER: The lid has a single port built into in.

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