Stainless Steel Growler Review – Keg King’s Ultimate Growler

Ultimate Stainless Steel Growler

Keg King sent me their Ultimate stainless steel growler to review. I spent some time on a Saturday logging data to see how it holds up.

Why a Stainless Steel Growler?

Keg King’s Ultimate Growler is a 64-ounce stainless growler for transporting beer from a tap to somewhere you want to drink that beer. Many growlers are made of glass, but this one is made out of 304 stainless steel. Many pools, beaches, and other public locations do not allow glass containers for safety reasons; this is a good alternative package to avoid that problem.

Since this is a stainless steel growler, you do not need to be concerned about it breaking inadvertently. The constructions feels solid, and the heft feels nice in my hand. The brushed stainless provides a good grip, even when it is wet.

The neck of the growler is a comfortable diameter and allows for easy pouring.

This Seal Barks, not Growls

One story of the growler’s origin states that the original tin containers emitted a growling sound because the lid could not form a tight seal. This caused the lid to vibrate, emitting a low growling noise. The Ultimate Growler has a tight bale-top lid with a food-grade silicone gasket to form a tight seal that barked loud when the top was flipped open.

You won’t need to worry about your beer going flat as long as the lid is closed.

Who, me? I’m just Chillin’

Chilled Growler
Initial Temperature 40 F / 4.4 C

To test the vacuum insulation, I filled the growler with iced water. The temperature settled at 40 degrees.

The growler rested on the counter in a 60-degree F room. I monitored the temperature every few hours.

4 hours later, the temperature was 42 F / 5.5 C
8 Hours Later
Checking after 8.5 hours, the temp had risen to 44 F / 6.6 C
18 Hour Temperature rose 10 F
After 18 hours, the temperature rose to 50 F / 10 C

Temperatures in the growler rose 10 degrees F / 5.6 C over the course of 18 hours.

I am happy with this growler, and think it’s a good option to transport your beer without taking a full keg.

Add a Bulkhead to Your Brewing Vessels

Why do I Need a Ball Valve?

Until you have a bulkhead and ball valve in your kettle, you don’t know what you’re missing. It’s a simple addition that changed the way I brew.

Installing a weldless bulkhead is not complex. If you already have a drill, everything else is linked below.I drilled 13/16” hole for the bulkhead so everything would fit a little bit tighter.

Be safe!

Don’t operate power tools while under the influence. Make sure you wear eye protection and hearing protection.

The ball valve I selected was what I felt met the needs for a hot liquor tank. There isn’t anywhere to attach devices inside the kettle since there won’t be anything to filter out. Below, there is a link to a bulkhead with a coupler for adding screens, tubes, inside the kettle.


Kettle with bulkhead and ball valvePlan out the placement for the ball valve to meet your needs. Depending on the way your system is laid out, having the valve centered between the handles may be ideal, but when I used the kettle for #LearnToHomebrewDay, I loved having the valve underneath the handle. It made the empty kettle easier to carry, and I didn’t bang it against the doorframe like I do with my other kettle.

A Few Options

The ball valve and bulkhead used in this video is simple, and would not work if you want to attach screens, dip tubes or anything else inside the kettle. However, if you have a flat-bottomed kettle and don’t see the need for anything inside the vessel, this is a great option: (Amazon)

If you do want to be able to add filters, screens, tubes, or anything else to the inside of your kettle, I would recommend a model with a coupler on the inside. (Adventures in Homebrewing)

Additional Equipment:

3-Piece Step Drill Bit Set (Amazon)

Cutting Fluid (Amazon)

12-Volt Cordless Drill: (Amazon) – This is the model I have. It worked great for the lightweight kettle I modified, but if you have a heavy duty kettle, you will want a drill with a stronger motor.

Safety Gear

Hearing Protection: (Amazon)

Eye Protection: (Amazon)

Is Automation the Future of Homebrewing?

A Cool (and Hot) Appliance

The Picobrew Zymatic displayed fully assembledThe Picobrew Zymatic is a device for making beer it home. It sprang onto the scene in 2013 as the first “beer-making appliance.” It has been compared to a bread machine since it controls the brewing process for you after you add the ingredients and select the recipe you want it to make.

Once everything is set up, the Zymatic goes through the steps programmed into your selected recipe. This means you, as a brewer, do not have to handle hot hoses, risk getting splashed with scalding water or worry about forgetting a hop addition.

After telling the device to start brewing, the brewing process takes about four hours. This includes mashing the grain for starch conversion to fermentable sugars to make wort, isomerization of alpha acids into bitterness, and adding hops for flavor and aroma.

Once the brewing process is done, all you have to do is cool the wort, add (pitch) your yeast, wait for fermentation to complete, and carbonate the beer as normal.

I Can Make Beer in Four Hours?!

Unfortunately, no. You can’t make beer in four hours. This device technically makes wort, not beer. Just like with un-automated homebrewing, you have to ferment the wort in order to produce beer. The fermentation process takes anywhere from five days to several weeks, depending on the strength of the beer, type of yeast and temperature at which the beer is fermented.

Is Fermentation Really Needed?

Fermentation is the process that produces alcohol from the sugars in the wort. After pitching the yeast, they ferment most of the sugars dissolved in the wort to produce alcohol, yeast esters (flavors and aromas), and carbon dioxide. The fermentation process also brings the flavors into balance with each other.

Unfermented wort is extremely sweet, and drinking more than a few ounces becomes unpleasant due to that overpowering sweetness. Through fermentation, the sweetness fades as the yeast consume the sugars in solution. This makes the bitterness and flavor from the hops more pronounced, and beer more refreshing. Since not all sugars from  the barley (and other grains) are fermentable, there is always some degree of sweetness left in the beer. This contributes to the body and mouthfeel of the beer, and allows the bitterness to be enjoyable to the beer drinker at the end.

What’s the Difference?

st_gfc_zymaticst_pic2You may wonder how the process differs from the setup many home brewers use to make beer. The main difference is that the process is controlled by a computer built into the Zymatic, rather than handled manually by a human separating the liquid from the grains and adding hops at specific times.

This can give the brewer a greater degree of control and consistency in the beer they make, since it doesn’t matter if the brewer gets distracted in the middle of the brew. The computer monitors the whole process, freeing you up to do other things, like sample the last batch you made.

There are some technical differences in the process.

  • The wort never reaches a boil, but due to the circulation process within the machine, the beer comes out tasting like it went through a full boil.
  • After the process completes, the beer still has to be cooled. Many home brewers have a chiller they use to  cool the wort as the final step of the brewing process. Since your wort is in a sealed keg upon completion, you have many options for cooling the wort quickly.
  • Easier cleanup. Once your brew day is complete, you can clean the tray that holds the grain quickly, and there is a “cleaning cycle” programmed into the machine to make sure you do not end up contaminating your next batch.

Is the Zymatic for you?

It depends. The cost is out of reach for many people, but is reasonable for others.

Brewers who love the manual process of managing each part of the brew day will not like this device, since it automates the process(es) they love. However, if you enjoy the process of creating recipes more than brewing, this is an ideal machine since it handles many of the technical details of the brewing process. It would also be an ideal fit for someone with limited space, since it is about the size of a bread machine, and the beer can be fermented in a smaller container than the keg delivered with the unit.

If this sounds like a solution for you, the Picobrew Zymatic can be purchased at More Beer online and delivered to your house.

If you purchase through the links on this page, I will receive a small payment which allows me to continue creating content about making beer and wine at home.