Sounds tasty. I only know black cow from the Steely Dan song , I assume it has booze in it.
I'm a teetotaller but I believe you are onto something. Many imbibables become more popular with booze added.
And I'm from Michigan where we insist all of our soft drinks be called "pop" and never "soda." That giveaway word reveals a probable secret New York invader. Our "soda" has ice cream added to the pop.