[Jack notices the uncomfortable shifting (he's not completely blind to body language, however hard he finds it to read on occasion) and manages to tone down the surprise. He is, after all, in no position to judge on this particular area, even if there was a very specific reason for it.]
Fair enough. I was pretty much tee-total myself for over a century. Uh... coke, then? Or cranberry juice? How about cranberry and ginger beer - that's a pretty good mocktail!