FerMonster 1 Gallon Ported Carboy With Spigot

FerMonster 1 Gallon Ported Carboy With Spigot

Accessories for your Fermonster  
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The Fermonster is a brand new fermenter designed specifically for fermentation. MoreBeer! gave product feedback for over 2 years of development and we think they nailed the design. The large lid allows for easy filling and makes hop or oak additions a breeze. The smooth sides are fantastic for sanitization - no ribs or texture to collect yeast or bacteria. The punted bottom allows sediment to collect to the sides so that you can siphon liquid from the center.  Because they are made from virgin PET plastic they nearly unbreakable and a lot safer than similar glass carboys.

These ported versions come with our plastic spigot (FE347), allowing for easy racking and sampling!

Made from heavy PET plastic, the same material used in 2 L soda bottles, which is nearly impermeable to oxygen penetration.  Due to the thickness of the material and the overall geometry the Fermonster does not require ribs or dimples for stability.  That results in a super smooth interior surface that reduces yeast and sediment buildup making it the easiest to clean, most sanitary PET carboy on the market.  The huge 4" opening makes filling a breeze, and cleanup is as easy as wiping down the inside.

These fermentors are completely air-tight and the lids sealed tight with an O-Ring.  Additional O-Rings and Lids both with and without holes are available for purchase, see our You Might Also Need items below.


  • 4" inner diameter wide mouth carboy - easy to clean!
  • Food grade PET plastic construction is nearly impermeable to oxygen penetration
  • No hard to clean dimples or ribs
  • Punted bottom
  • O-Ring and Lid with one hole is included (Fits #10 Stopper)
  • Additional O-Rings and Lids available
  • Weight: 0.6 lbs
  • Temperature Limit: 140° F
  • Height: 9.45 inches
  • Diameter: 6.7 inches
  • Completely taste and odor free
  • Perfect for Beer, Wine, Cider, Mead, Kombucha or any other fermented beverage!


Item # FE261
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.59 LBS
Community Q&A

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Browse 4 questions Browse 4 questions and 31 answers
Why did you choose this?
MoreFlavor Store
looking for a larger 1 gallon fermenter
Jeffery C on Apr 29, 2021
good size for making Kombucha
James R on Jan 30, 2021
looking for a larger 1 gallon fermenter
Jeffery C on Apr 29, 2021
For ginger beer
Chris W on Apr 22, 2021
good size for making Kombucha
James R on Jan 30, 2021
I liked the design of the normal fermonster and I think the spigot will be helpful
Adam B on Jan 13, 2021
Easier way to bottle
Richard L on Dec 9, 2020
Small/compact, for small batches
Wanda G on Nov 12, 2020
Useful for racking brews
Adam R on Sep 5, 2020
Small batches of ginger beer and hard cider.
Dr. Thorian H on Aug 17, 2020
Ron W on Jul 31, 2020
Planning to use this for cider and I will bottle directly from the spigot to help avoid oxidation.
Kenneth M on Jun 19, 2020
Cider fermentation, small batch is nice and the spigot makes it easy to sample
Robert R on May 1, 2020
for mead
Melissa A B on Apr 18, 2020
wanted a spigot for small batch mead
Melissa A B on Mar 4, 2020
Brother wanted it for Christmas
Michael M on Dec 18, 2019
Wanted a wide mouth carboy this size
Randy V on Nov 30, 2019
Got it for a kombucha continuous brewing system. Might get more to have on hand to make tepache or other concoctions
Antonio A on Nov 17, 2018
Easier to handle than glass, and the spigot should mean no siphoning!
Scott Brenneman on Oct 30, 2018
I like the idea of spigot to eliminate siphoning.
David H M on Oct 17, 2018
For ginger beer
Chris W on Apr 22, 2021
I liked the design of the normal fermonster and I think the spigot will be helpful
Adam B on Jan 13, 2021
how much brew will this actually hold? Is it 1.4 gallons?
Aaron Pittman on May 22, 2020
BEST ANSWER: This fermenter is designed to hold 1 gallon with a little headspace for krausen. In total it will hold about 1.2 gallons if you fill it all the way to the top.
Does it hold exactly 1 gallon of liquid, or is there additional space for the krausen?
David Basham on Nov 17, 2019
BEST ANSWER: There is ullage above one gallon for krausen. These were fairly successful and economical for doing side-by-side fermentation trials. However 1) the side walls are thin and flimsy like a PET soda bottle, 2) I did have some trouble getting the spigots to seal, so test those before filling them with fermentables, and 3) I saw no action on the fermentation lock: not sure if the stopper made a poor seal with the cap, or if the screw-top lid seals poorly. Not a big deal but an inconvenience.
Does the spigot have a sediment blocker?
Andrew Butler on Apr 5, 2021
BEST ANSWER: Not sure what you mean by “sediment blocker.” The spigot is positioned some distance from the base though, so there’s room for a lot of sediment below the spigot. I use mine for kombucha so don’t have to worry about sediment.

3.7 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
It's just ok
I like it, but I don't think it's going to last. Everytime I open the spigot I am afraid it's going to break the carboy. So I have to use both hands to hold the base of spigot still and turn it.
April 6, 2021
2 months ago
Rated 5 out of 5
Great 1 Gallon Fermenter
Great fermenter for running test batches of sour beer! The spigot makes bottling very easy.
January 20, 2021
5 months ago
Rated 5 out of 5
Great for my mead fermentation
Easy to clean and clean
Easy to clean and clean
August 29, 2020
9 months ago
Rated 2 out of 5
Looks are deceiving
The plastic in this fermentor is very thin and I know this will not last. Has I known this previously I would have ordered something more durable.
August 13, 2020
10 months ago
Rated 2 out of 5
Cheap and Flimsy
The plastic is flimsier than I expected, and the o-ring won't stay in place. The lids come with ludicrously large holes meaning that you're likely to have to buy stoppers specifically to work with these fermenters. Bottom line is they just aren't worth the price.
June 2, 2020
1 year ago
Response from MoreFlavor
Hey so sorry about your experience. Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. We try very hard to create the best experience for our customers and provide quality products. Please give us a call at 1-800-600-0033 or email us at info@moreflavor.com so that we can assist you. We are here to help. Cheers!
June 4, 2020
Malcolm lieban
Rated 4 out of 5
Pretty good
It’s plastic and a little flimsy but does the job
April 25, 2020
1 year ago
Rated 5 out of 5
Great gallon
Came as advertised and I’m pleased. As a matter of fact I have a mead fermenting right now and I’m going to order a few more
November 9, 2019
1 year ago