what does aunt julia use for her burger bun?

i forget all about the burger bun. i guess it's because i'm wheat -sensitive. it's good that i remember now. better late than never. the bun is an essential part in a burger. and this burger deserves a better bun.

i wonder what would be strong enough to soak up the meat juice and still retain some texture and not gluey. hmmm, what would my aunt julia use? i do remember her making a burger with jacques pepin and eating it. what does she use? i scratch my head for 2 days. i think it's the bun used in making this french style ham and cheese sandwich. they use gruyere, plenty of butter and then fry both sides. what's the name of the sandwich? my inner voice says, google it. yeah, but what's the question, like, what's the bun that julia child uses for her french style ham and cheese sandwich? i guess so.