Making a crossword grid was as impossible as I thought it'd be. However with software I was amused as to the hacky corners I could paint myself into and talk myself out of. As a meta this is flimsy maybe but I'm amused by its ability to make excuses for itself.
There are two alternative answers. One was the intended answer but through an oversight it doesn't actually fit the mechanism, so with a bit of googling I found a cocktail I had never heard of that did fit the mechansim... with a hack.
By the way. A cocktail need not be alcoholic although both meta answers are. Enjoy.