It sounded so darn refreshing...and had lots of ginger stuff in it, if I'm recalling correctly. This was on my November flight home, but I didn't pay attention to what month it was (could have been an old magazine or that months).
You can look through past issues of Delta's Sky Magazine...
Click on the link, then in the upper right hand hand corner drop down the black box titled "In The Magazine" to view the current issue. Once you bring up the current issue you'll see an "issues" tab on the left hand side of the screen. Open up the issues tab to reveal all their issues available online.
I quickly searched through September, October and November issues but came up empty for your dark and stormy. Perhaps you'll have better luck with a longer search.
Or you could contact the Delta Sky Mag editors and ask for what you are seeking....
General editorial submissions or questions: edit@deltaskymag.com or 612-373-9613.