For example, if you have a guy who is an Indian (from India), and you say something like,
Sukant answered in his Northern Bhojpuri accent, "Yes. It is indeed true. Many people come into my store but not everyone for buying something."
Now later in the story, do I have to write things that "sound" Indian. You know, I don't have to make them somehow sound like the Indian guy in The Simpsons. I figure that as long as I subtly mention it a few times in the story, the reader will supply it naturally. Maybe I can use some idioms from his hometown, if it is important to the story, but other than that I don't know.
Say like a guy was from the South (like Alabama). Does he really have to say "y'all all the time"? "Howdy"? "Fixin'"?