Tuesday Tidbit: TerrePURE, Terressentia and OZ Tyler

So what's TerrePURE and what does it have to do with bourbon? Well, the TerrePURE process was developed by the Terressentia Corporation back around 2007. The process purifies alcoholic beverages using ultrasonic energy and oxidation. Few details have been revealed except to say that it could remove unwanted congeners (byproducts of fermentation) as well as convert some fatty acids to more flavorful esters. This process would overall "purify" a spirit and make it more flavorful.

Are you familiar with TerrePURE, OZ Tyler and Terressentia? If not, then read on!

So, what is TerrePURE?

So what’s TerrePURE and what does it have to do with bourbon? Well, the Terressentia Corporation developed the TerrePURE process back around 2007. The process purifies alcoholic beverages using ultrasonic energy and oxidation. Unfortunately, Terressentia revealed few details of the process except to say that it could remove unwanted congeners (byproducts of fermentation) as well as convert some fatty acids to more flavorful esters. This process would overall “purify” a spirit and make it more flavorful.

TerrePURE has been applied to many spirits, include vodka, which may have been its initial use. It was also used to produce flavored spirits because the molecular motion caused by the ultrasonic energy was said to create a superior mixing environment where flavors would not come out of solution in the bottle.

1 Year Old Whiskey Tastes Like It Is 4 Years Old With The TerrePURE Process

The company line was that a 1 year old whiskey could be made to taste like a 4 year old whiskey simply by undergoing the 8 hour long TerrePURE process. Skeptical? So was I, and we’ll get to how it tastes in a moment.

O.Z. Tyler Bourbon is Born

Back in 2014, Terressentia purchased the Charles Medley Distillery in Owensboro, KY. Then, they reopened it as the O.Z. Tyler Distillery. O.Z. Tyler mashed and distlled their bourbon distillate similarly to other distilleries. Then, they aged it in new charred oak barrels for 1 year and 1 day. Why 1 year and 1 day? Well, because that is the minimum aging time (in Kentucky) needed to call a bourbon a Kentucky Bourbon. Finally, the aged bourbon underwent the TerrePURE process and was bottled.


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Tasting Notes – O.Z. Tyler Rye

So, let’s taste it! Well, actually, let’s not. I tasted the whole line of O.Z. Tyler’s whiskeys back in the day, and it is the only flight in the history of me drinking whiskey where I didn’t finish a single sample. Four year old bourbon and rye it was not. Google some reviews and you will find similar sentiments.

A Pre-O.Z. Tyler Whiskey; O.Z. Tyler Rye

The interesting thing is that this bottle, which I just found the other day, pre-dates the O.Z. Tyler Distillery in KY. This rye was produced using the TerrePURE process at their plant in SC, presumably from MGP bourbon. It bears an age statement of “Aged a minimum of 6 months in new oak”. Perhaps it is better that what I tried? I’m not sure I’m ever going to find out…

O.Z. Tyler Rebranded – Good Bye TerrePURE!

After a few years, O.Z. Tyler rebranded as Green River Distilling and Green River Spirits Company. Likewise, they abandoned the TerrePURE process for their own whiskeys. However, they may still use the process for some of their clients’ brands. Recently, the Bardstown Bourbon Company purchased Green River Distilling.

Have you tried any O.Z. Tyler whiskeys made with the TerrePURE process? What did you think? Cheers!🥃

If you would like to learn more about Green River Distilling, check out our Green River Distilling Co. Virtual Tour (Video)!

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About the Editor: Ed Escott is truly "Bourbon Obsessed". He is the founder of Bourbon Obsessed, LLC, and an Executive Bourbon Steward of the Stave and Thief Society. In addition, he has authored and edited over 600 bourbon and other whiskey reviews, over 50 in-depth distillery write-ups, and many other related articles. He is on the board of the Kentucky Bourbon Influencers and a member of the Lexington Bourbon Society and the Bourbon Capital Guild. Last, but not least, Ed has attended many bourbon-related educational sessions, visited countless distilleries, and is on a never-ending quest to try every bourbon.

Prior to focusing solely on Bourbon Obsessed, Ed practiced in academic medicine for three decades. He most recently was a Professor at the University of Kentucky and served as Chief of the Division of Neuroradiology and Vice Chair For Faculty Mentoring, Development & Wellness of the Department of Radiology. He has extensive editorial experience in academic medical publication, and brings that same academic mindset to Bourbon Obsessed, which is a unique approach for a spirit-focused media company.

Ed can be found on social media on Instagram at @bourbon_obsessed and on Facebook at @BourbonObsessed

About the author: Ed Escott is truly "Bourbon Obsessed". He is the founder of Bourbon Obsessed, LLC, and an Executive Bourbon Steward of the Stave and Thief Society. In addition, he has authored and edited over 600 bourbon and other whiskey reviews, over 50 in-depth distillery write-ups, and many other related articles. He is on the board of the Kentucky Bourbon Influencers and a member of the Lexington Bourbon Society and the Bourbon Capital Guild. Last, but not least, Ed has attended many bourbon-related educational sessions, visited countless distilleries, and is on a never-ending quest to try every bourbon.

Prior to focusing solely on Bourbon Obsessed, Ed practiced in academic medicine for three decades. He most recently was a Professor at the University of Kentucky and served as Chief of the Division of Neuroradiology and Vice Chair For Faculty Mentoring, Development & Wellness of the Department of Radiology. He has extensive editorial experience in academic medical publication, and brings that same academic mindset to Bourbon Obsessed, which is a unique approach for a spirit-focused media company.

Ed can be found on social media on Instagram at @bourbon_obsessed and on Facebook at @BourbonObsessed

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