I had my first iced coffee ever 10 years ago at a small Thai restaurant in Pasadena, CA. At the time, I had barely seen iced coffee around my hometown (Baltimore) and it was a revelation of sorts. Before that, I had never even successfully enjoyed a cup of hot coffee (always a couple sips and threw the rest away.) So I have great affection for Thai iced coffee because it catapulted me on my coffee journey.
As my coffee palate improved, I found I couldn't tolerate Thai or Vietnamese Iced Coffee anymore. I just find American iced coffee to be so much better. I still occasionally order Thai iced coffee, thinking maybe most people just don't make it properly, thinking maybe that one in Pasadena so many years ago was done right. But I'm always disappointed. I've only ever seen Thai coffee available ground, never as whole beans. I'm guessing the pre-ground Thai coffee is what most restaurants make their Thai iced coffee with.
Is there a "good" version of Thai/Vietnamese iced coffee? (Side question: is there a difference between Thai iced coffee and Vietnamese iced coffee?)