Here's the teaser from Brewing Up a Storm by Emma Lathen. (The brew here is beer, not tea; more specifically a non-alcoholic beer called Quax. I could get you one of those, if you prefer.)
"But they see adults drinking in every restaurant with a liquor license."
Aware that she herself had polished off two glasses of wine with her lunch, Madeleine knew there had to be a distinction escaping the Honorable Member.
This was one of the last, if not the last John Putnam Thatcher mysteries, published in 1996. It's very strange reading about JP in the '90s. Good thing no one ages in these books.