Hands on Review: Jaybird Ball Lock Canning Jar Hop Randall from NorCal – convert a Mason Jar into a Hop Randall

This review is by Homebrew Finds Contributor Brad Probert.  Brad is an engineer, expert homebrewer and experienced reviewer.  Grab a link to Brad’s website at the end of this review.

NorCal Canning Jar Randall

The original intent of the Randall was to infuse beers with additional hop flavors and aromas, but it can be used to infuse your beer with a variety of flavors. In addition to hops, fruits are often used, but also things like vanilla beans and cocoa nibs. The beauty of the Randall is that you can experiment with these different additions without dedicating the whole keg of beer to it. If it isn’t just right, you can change it up, and you haven’t ruined a whole keg of beer with what “seemed like a good idea at the time”.

With all of your additions, the flavor impact is fairly minor. Think of it more like adding complimentary flavors, not making a flavor showcase. For hops, the flavor and aroma addition are different than other hop additions due to the temperature you add them. There’s no boiling isomerization so you’re not getting bitterness. And it’s not like dry hopping where you’re soaking them in ~70 degree beer for a couple of days. With the Randall, the hops have a couple seconds of contact time at 35 degrees (or whatever you like to keep your keezer serving pressure set to).

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Jaybird Hop Randall sitting in Brad’s Keezer

NorCal Brewing Solutions’ Randall has a design that uses a 64 oz. canning jar (not included). With a canning jar’s thick-walled tempered glass design, it’s able to handle carbonated beer pressure and be somewhat durable (of course don’t drop it). It has liquid in and liquid out ball lock posts coming out the top of the lid, so it’s actually well designed for a keezer. Its size and weight make it stable to sit sturdily, and the posts coming up from the top provides easy access for beer line connections. There are two connections- one is long and reaches to the bottom of the jar, and the other one is short and sits above a welded-in strainer plate that’s part of the lid. This strainer plate helps keep your hops/fruit from floating up and clogging the tube when dispensing. There are a couple of silicone gaskets on the lid assembly to keep things sealed, and then a regular canning jar ring to screw things down and clamp the seal.

Randall Lid and Tube Layout

Hands on Review

For my first trial, I had a Black Lager on tap. I was really enjoying it, and thought a cherry flavor would go well with it. Since November isn’t fresh cherry season, I had to settle for dried cherries. My first test run showed I had under-done it, using about a 1/2 Cup. I then upped it to about 1.5 Cups of cherries. With the size of the NorCal Randall, it could easily accommodate this amount of fruit. Even if it were fresh fruit instead of dried, the 64 oz. jar seemed to be a good size. The finished beer tasted great. It still tasted like a beer (not a dessert), and the subtle cherries on the back end made the perfect complement.

Using the Hop Randall to add “dry hop” with cherries

I had some issues with beer leaking out between the jar and the lid when it filled up with pressurized beer. The keg was initially running at 12 psi, but to keep the Randall from leaking, I had to dial back the pressure to just 5 psi. This worked, but made for a very slow pour. I have future plans to set up a short length of line from the Randall to the tap. That way I won’t have needless length of line slowing down flow.

My next trial was with adding hops. I had an Amber Ale that was by all accounts boring in flavor. With the mesh size in the Randall, you need to use whole leaf hops, not pellets. Pellets will breakdown and just pass through into your beer. I poured in a 1 oz. bag of Centennial leaf hops. Once wet, they swelled up a fair amount. It looked like I maybe could’ve gotten 2 bags in there, but 1 filled up a good portion of the volume. The aroma was nice (lightly fragrant), and the flavor was very different (somewhat grassy). In this case, I don’t think my base beer was flavorful enough to mask some of the grassy flavor from the Randall hops.

1 oz bag of leaf hops in the NorCal Randall

After my leakage issues on my Black Lager batch, I put my full effort into screwing the lid on as tight as I could. The extra muscle seemed to pay off, as with the same line length set-up, I was able to have the keg at 10 psi and not have any leaks at the Randall. I did battle copious amounts of foam initially, though. The standard set-up for the Randall is beer going in through the long tube that reaches to the bottom of the jar, and beer going out through the short tube that sits up top above the screen. Jay at NorCal suggested I try swapping the in & out, so I’d be drawing beer up from the bottom of the jar. Like magic, the foam was gone. With all of the hops floating in the beer, they were up around the short post and this caused a lot of foam in the output. By drawing up off the bottom of the jar, I didn’t get any hop debris (since they were floating), and it solved my foam problem.

Clean up was super easy. I threw in one of the steel scrubbies that NorCal offers as an add-on to their Randall to help with filtering. I’m not sure if it was truly needed with the hops or not, it may be more intended if you have smaller particle size flavor additions. The glass and stainless steel cleaned up with just hot water from my sink sprayer. Surprisingly, even the steel scrubby cleaned out with just a few blasts of water.


Overall, a Randall adds another tool to your beer creativity toolkit. Not every beer needs or would benefit from flavor infusion additions. But having this available to you allows you to create something you might not otherwise be able to make. And for hop lovers, the idea of another hop flavor addition method is justification in itself.

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Foamy Pint before swapping inlet and outletA closer look a the screen size

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Special Thanks to Norcal Brewing Solutions for providing the equipment used for evaluation in this review.

By Brad Probert.  Check out Brad’s website – beersnobby.com

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Canning Jar Equipment at NorCal Brewing Solutions

Make sure the components you use are compatible and rated for your intended application.  Contact manufacturer with questions about suitability or a specific application.  Always read and follow manufacturer directions. tag:lnksfxd review:nchoprandall tag:tpr

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