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THE RUM COLOR: After only 30 (very cold) days inside the barrel,

we did not really expect the rum to have changed in color too drastically. The sample retrieved shows only slightly yellow coloration, almost imperceptible to the naked eye. Comparing against the control, with a white background, makes the color a bit more noticeable. AROMA: The aroma is still predominantly that of the con-

trol (unaged) sample, only hints of oak are present in the background. PH: While working in Central/South America and the

Caribbean, we collected a lot of data regarding rum’s pH changes inside the barrels, but usually at annual or semi-annual intervals. We knew from experience and from science that the pH would go down, but didn’t really expect the jump to be as rapid as it was, especially given the low temperature in the cellar. The rum that went into the barrel 30 days earlier had a pH of 7.04 and after only one month of aging in the cellar, the pH dropped to 5.67. ABV: The barrel’s entry proof was 63.43% ABV and one

month later that number was 63.42%.

WHAT’S NEXT? Q1 is the coldest quarter of the year in Central Texas. February’s and March’s average temperature should be slightly warmer than January’s, resulting in a faster extraction rate and in slightly higher evaporation loss. The evaporation loss means that additional ambient air will enter the barrel (to replace the volume of alcohol lost), continuing the acidification and esterification of the rum inside the barrel, but at a higher rate than in January. The higher daily temperature deltas (the difference between the day’s highest and lowest) will also result in a higher rate of extraction of solids from the barrel staves, resulting in deeper color and more intense oak aroma. Luis Ayala is an international rum consultant and broker of specialty aged rums. He is founder of The Rum University, Rum Central and Got Rum? magazine. For more info visit www.gotrum.com or email luis@gotrum.com.

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Solutions & Equipment for the Processing Industry



Profile for Artisan Spirit Magazine

Artisan Spirit: Spring 2020  

The magazine for craft distillers and their fans.

Artisan Spirit: Spring 2020  

The magazine for craft distillers and their fans.

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