Kombucha brewers follow craft beer footsteps

Kombucha manufacturers like Big Easy Bucha are following an equipment and automation path well-worn by the craft beer brewers that preceded them.

Big Easy Bucha’s new monobloc features a 30-valve rinser, 36 filling valves, and a six-head rotary capper.
Big Easy Bucha’s new monobloc features a 30-valve rinser, 36 filling valves, and a six-head rotary capper.

A fermented, carbonated tea known for containing probiotics and a hint of alcohol, kombucha is the latest natural health and wellness-oriented product to migrate from the periphery of homebrewers and hobbyists to mainstream retail shelves and foodservice display cases. Natural and wellness retail product tracker SPINS reports that the category has grown between 30% and 40% per year for the past five years.

Husband and wife team Austin Sherman and Alexis Korman, founders and owners of Big Easy Bucha in New Orleans, can personally testify to this mainstreaming trend. Sherman had been a homebrewer and recipe tinkerer himself until Korman recognized that his skills were ready for the big time. The pair launched Big Easy Bucha in 2014, established a brand identity, developed varieties distinct from the prolific West Coast kombucha scene, and rode the trend’s meteoric rise into the limelight.

“But anecdotally, we find that not many people have heard of it yet, even though it’s approaching a billion-dollar market,” Sherman says. “Think about craft beer at its inception 20 years ago; that’s where kombucha is now. It’s at an intersection of people wanting a carbonated option, people interested in probiotic gut health, and people looking for an alcohol replacer that can be consumed during the week without guilt.”

Big Easy Buch can be found at retailers throughout the South and East, including Publix, Whole Foods, Rouses Supermarkets, Central Market, and many more. But as the company’s reach grows, so too does its need for packaging automation.

Leapfrog forward with a filler
Big Easy Bucha has slowly automated its packaging operations by following that piecemeal pathway—long the hallmark of growing craft breweries. Line speeds crept upward over time, even vaulted forward with a Combi Packaging Systems case erector and pack station. But Sherman hit a roadblock of about 30 bottles/min—a speed limit imposed by the company’s entry-level, modified time gravity filler that could only handle low volumes of CO2.

But by the time he’d hit that upper bound, distribution had also hit 1,300 retail outlets across 13 states and was only growing. Something had to give. So Sherman again sought new equipment, in this case a counter-pressure filler to improve throughput volume and carbonation content. And this time, he wanted to make a purchase that would allow him to bypass a few incremental upgrades. Skipping a few steps, he landed on a high-capacity Fogg monobloc rotary rinser, filler, and capper.

“We really tried to future-proof it as much as possible by aiming higher than what we needed at the moment,” he says. “We wanted something we could grow into and add on additional fillers in the future. Now with the Fogg filler, we’re able to do about 600-percent more volume with the same amount of time in man-hours. Our speeds have already more than doubled. Plus, we’ve been able to streamline our fill levels, so our consistency has improved. I think based on that, we’ve seen about a 30-percent increase in sell-through at the store level. We’ve really grown up as a brand.”

Tiny bubbles
As a counter-pressure filler, the Fogg removes the oxygen from the bottle, replaces it with CO2, equalizes the pressure from the bright tank (or pressure vessel), then gravity fills and caps the bottle immediately thereafter. Being able to fill under pressure gave Sherman the green light to carbonate at higher volumes than he was before.

“We were able to go as high as 2.5 volumes of carbon dioxide before, which is the equivalent of a lightly carbonated soda,” Sherman says. “Now we’re able to go as high as we want, but we generally aim for between 2.7 and 2.8 volumes.”

And without any oxygen left in the bottle, shelf life is extended, permitting greater reach into new markets at greater distances.

Current packaging line
Bottles are manually depalletized from bulk glass pallets with corrugated layer dividers. In anticipation of the new filler, a previous rotary-style accumulation table was replaced by a uni-directional feed accumulation table. While the process is manual, the feed table is large enough to handle more than a layer at a time, so it’s a matter of sliding each bulk glass layer onto the accumulation table instead of hand-picking and placing.

Glass is conveyed to a Chicago Automated Labeling labeler for pressure-sensitive labeling. Before the new filler was installed, this labeler was positioned post-fill. It was moved to the front of the line to avoid downtime associated with changing over labels at the speed the Fogg is now running. Because the new filler is a counter-pressure system, it unfavorably warms up if the line is forced to go down due to downstream errors. An upstream labeler, and upstream label changeover, removes that variable.

The new Fogg monobloc has a 30-valve rinser with 36 filling valves and a six-head rotary capper. It can operate at speeds to 150 bottles/min of 16-oz glass bottles, but Big Easy Bucha is currently running at a comfortable 80 bottles/min as it grows into the machine.

“We could certainly go a little faster, but this is still new for us. Every week we go up a couple of bottles per minute, though, as we learn the machine,” Sherman says.

The monobloc cabinet contains a bulk cap elevator to carry the caps into the centrifugal sorter and hopper to cap the bottles. The system also uses a rinse recovery skid to recover the rinse water and reuse.

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