Definitely look into it! I believe it's a holdover from French colonisation.
I don't know what type is used but it is quite nice combined with the rest of the flavours.
Banh mi is so good. There was a little Vietnamese cafe nextdoor to a place I used to work, I went there every workday. I saved so much money after I moved to a different location xD
I have a feeling I would do the same if I had a place so close. The closest banh mi near me is a 45 minute drive so I basically have to make it myself if I want it.
Man I haven't made that for ages. Where i grew up all the shopping malls would have a guy with a little electric grill making these and they were amazing. Going to make it today for cooking tomorrow! I tend to use chicken but maybe I'll try pork thise time