Haha yes
I'll explain that because it's surely going to be confusing to people who haven't visited
There is a famous drink that has different names throughout Mexico. Here in Jalisco it's called a "rusa". You can make a rusa with lime juice, about a quarter teaspoon of salt, and soda water. The ones you buy in the street will normally have grapefruit soda called "squirt".
For a long time I had a little note on the menu saying "Kurt says: try a root beer rusa!" People started calling it "a Kurt special" and then eventually a companion suggested the title "la kurtiña". So that's the house specialty, the drink that bears my name
RE: The first sober bar in Guadalajara – El Sentido