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Small Batch Quad Core Fermenting Kit


SKU# 41098

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OK, so we've got 12 bottles that'll be ready next week, but there's that party the week after that, and then the monthly poker night - did we get them a gift for their birthday? Once you start brewing, the world finds out and conspires to "sample" your beer away from you. Keep 'em coming back, get a small batch Quad Core Kit.

Also the perfect addition to our Master Vintner® Small Batch Wine Starter Kit. Don't wait to start another batch of homemade wine.

Includes 4 of each:

  • One Gallon Fermentors
  • FermograF - Adhesive LCD Thermometer
  • Screw Caps with Hole
  • Blowoff Tubing
  • Three-piece Airlocks

Availability: In stock

Small Batch Quad Core Kit

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  • Small Batch Quad Core Kit
  • Small Batch Quad Core Kit
Product Details
You can handle the increased capacity, but even better, you can try new things, keep it fresh. Black IPA, German Blonde, Irish Red, and Caribou Slobber, all at once? Not a problem for the Quad Core.

Works for beer and wine. See our 1 Gallon Small Batch Starter Kit or the Master Vintner® Small Batch Wine Starter Kit.

Need a new Primary Fermentor for your 1 gallon batches? See the Small Batch Big Beers Booster Pack.
Additional Information
Support Documents:No
4.7 / 5.0
34 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Caps are Garbage - Not happy.
I was really excited to get this kit so I could start making smaller batches for testing and trying new things. However, on week 3, all four of the caps were broken at the top, exposing all four 1-gallon batches to oxygen. Overtightening? Didn't seem to be *too* tight, because air would leak out unless they were tight. Like, to the point that it would just escape through the cap-gab, instead of going through the airlock. If you could use a regular carboy bung to seal the hole, that would be one thing, but you can't. I ended up just taping all the cracks and hopefully the wine isn't ruined. (100 bucks down the drain). So that's why you get two stars. The caps are garbage. I should have listened to the other reviews. I'll just pick up 4 growler lids, drill holes in them and put the airlock in those next time. Get a new supplier for your airlock lids, because they're worthless and didn't last one single batch.
October 16, 2015
Response from Northern Brewer
Thanks for the review. It could be edited in the future if you like. the only time I run into the caps breaking is usually because they are exposed to harmful solutions like bleach for extended periods. We'd be happy to send the Size 6 rubber stoppers so you can use those on your fermentors instead. Let us know!
November 21, 2016
Northern Brewer
Great for experimenting
I'm updating a previous review that I wrote after my first batch.I had issues with the caps that came with the kit. They all broke on the first batch. Thankfully, the $100 wine kits didn't get infected (and turned out great - I got the 4 x 1 gallon taster kit). Because of the caps, I gave it 2 stars.NB reached out and offered to replace the faulty caps with drilled #6 rubber bungs, which would have totally avoided the issues in the first place.I'm giving 4 stars because they fixed the initial issue, although I still subtracted a star for the hassle, and anxiety about possibly ruining my batches. If these came with the drilled rubber bungs in the first place, this would be a 5 star product.
November 30, 2015
Decent, but....
The plastic caps suck!!! They don't provide adequate seal b/w cap/fermenter and cap/airlock or blow-off hose. Replace with #9 rubber stopper and it would be 5 stars.
August 28, 2013
Definitely a must for those who want to experiment!!! Start off with a 1 gallon batch of your own design, if it's great, then scale it up!!! If it's not so great, then u can dump it and only lose $12 as opposed to $35-$50. I would recommend getting different stoppers for your air locks though.
October 22, 2013
Getting this is my first expansion into brewing. The previous brews have worked out well and this will allow me to step up my efforts. I enjoy my newfound hobby and my reward is good homebrewed beer. My friends also appreciate my efforts as well. Glad to be able to expand with a modest price involved.
July 14, 2013
Everything I was looking for
Got these to add to a single gallon container I already have. It now allows me to make a 5 gallon batch and split it five ways to get multiple results. The caps are not the best for a seal but replacing them are fairly easy and inexpensive. Great product for the cost.
January 30, 2014
Great Product
I am a new brewer but love brewing so this product was ideal for me.
November 1, 2013
includes every thing you need , caps , air locks , temp sticker AND blowoff tube !!!
October 8, 2015
Great items for small batches!
I bought this to make mead. They have worked perfectly. I did replace the plastic caps with some carboy bungs but other than that this kit is fantastic. I have three meads in progress now and have used the fourth 1 gallon carboy as the transferring carboy (to rack to secondary/tertiary). This site has been great too. Timely shipping and have not had a bad experience yet.
January 8, 2015
Excellent product
I consider this a must have for anyone starting to brew. They are great for experimentation with different brews.
September 26, 2013
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 14 questions Browse 14 questions and 25 answers
I attempted to use these vessels for primary fermentation and ran into some issues. I used gallon jugs of water from the store to help measure the 1 gallon level of the jugs and the 1 gallon line appears to be only about 2 inches from the top (essentially in the neck). As a result, little to no head space led to a fairly explosive krausen that ran the length of the blowoff tube leaving a bit of a mess and losing some beer. Is everyone else having the same issue? The simple solution seems to be to not fill to the gallon mark but that seems like a dumb idea as you get less product at the end. Or that these jugs are only good for secondary fermentation (which may be what everyone is using these for). Any insight would be greatly appreciated.
T I on Jun 13, 2016
BEST ANSWER: I think they are better used as secondary vessels, for the reason you cite. If you have a full gallon in them, it will be so full that even a little bit of krausen foam will push up and out of the airlock, making a mess, and losing some of the batch of beer. I would suggest instead the Little Big Mouth Bubbler or a 2 gallon plastic pail be used for the primary, and the gallon jug be used for the secondary. -Mike W, Northern Brewer
What size tubing is needed? I would prefer to have enough blow off hoses for all of them rather than just one.
shannon s. on Mar 9, 2016
BEST ANSWER: Each of the jugs come with their own section of blow off tubing and airlock. If using these as secondary fermentation, there should be NO issue with even needing the tubing.
One suggestion is to purchase rubber stoppers with a hole for the airlock. The caps provided (which the air locks fit into) are less than desirable, but will work. That would be the only suggestion / change that I would have made for my order.
Are 1.5 or 2g what's it size .
M A on Jan 30, 2016

These jugs are one gallon each.


how big is the bottle opening?
I S on Dec 3, 2015
BEST ANSWER: Its a standard growler lid size, so 1.5" I believe.
They sent me #6 rubber bungs. Hope that helps
Are these plastic or glass carboys?
D P on Sep 30, 2015
BEST ANSWER: The jugs in the Quad Core kit are glass.
Can you bottle condition with these?
A shopper on May 11, 2017
BEST ANSWER: Mine are put up from a recent move, but I don't think they came with a cap that seals. If they do I would be worried about the resulting mess in the event of a bottle bursting.
I am curious how far to push the airlocks into the caps. I gave a gentle push and they had some wiggle and it seems like air will still be able to escape. I pushed pretty hard and they are solidly in the caps now (probably a little over half of the stem is in the headspace of the fermentor), but I am concerned about cracking the caps down the road. It looks like cracking has been an issue for some people. Is it common to need to replace the caps with rubber bungs? And is a little wiggle ok or is it better to push them in firmly?
M E on Jan 21, 2016
BEST ANSWER: The airlock should not be forced into the cap. A little wiggle room is okay, but be aware that this might reduce the potential for observable airlock activity. This too is okay, since minor gas exchange like this will not negatively impact your cider. I would err on the side of not forcing the airlock into the cap and potentially breaking it.
Can these be used for making hard cider? What else would I need to buy to set up for making hard cider?
J T on Oct 5, 2015
BEST ANSWER: These fermentors work perfect for making hard cider! Not much else is absolutely required - you need mini siphon tools to transfer into and out of the jugs safely

and probably a capper for bottling the cider in beer bottles

if you want it carbonated. Take a look at out cider starter kit for other potentially useful tools you may want then find a recipe that has step by step directions for maybe 100% apple juice

that is the easiest.
everyone is mentioning to use this as a secondary vessel. If this is a secondary fermentation vessel, what is the need of blow off tubing? Fermentation will be over with so why couldn't you just have an air lock?
Austin W on Jul 6, 2017
BEST ANSWER: Thank you for contacting Northern Brewer. You can use the one gallon glass jugs for either primary or secondary fermentation, however the one gallon glass jugs don't have a lot of room for active fermentation stage, which is why the blow off hose is used, but you could lose some of your precious brew. A lot of customers like the Little Big Mouth Bubbler for the primary fermentation because it is 1.75 gallons, so you will have the extra room for active fermentation. Cheers!
What is the diameter of the jugs? I'm trying to figure out if they'd fit in my fridge.
A shopper on Dec 20, 2016
BEST ANSWER: ~6.5" diameter. ~11.5" tall without an airlock
Is it possible to get a 1 gallon packaging volume out of this if you assume 10% loss to trub and sedimentation?
J O on Jun 27, 2016
BEST ANSWER: That sounds about right!
Hello - what are the dimensions of one of these fermentors? Trying to see how many will fit in my chest freezer.

A R on Dec 16, 2015
BEST ANSWER: These jugs are 11.25" tall and 6.5" wide
Can the glass handle boiling water temperature? I was thinking of putting the carboy in boiling water for 10 mins to sanitize it instead of using StarSan since it foams a lot (due to narrow opening) which has a slight sour taste. Not sure if it's a good idea.
Kunal S on Feb 5, 2017
Can the glass handle boiling water? I was thinking of putting the carboy in boiling water for 10 mins for sanitizing it instead of using StarSan to avoid the foam completely. Not sure if it's a wise idea.
A shopper on Feb 5, 2017

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