1 hour ago, MokaPot said:For me, the pickled daikon is essential to the sandwich.
I like cilantro in the sandwich, but I've had banh mi without cilantro. (Restaurant ran out of cilantro.) I was disappointed, but the sandwich was still tasty. I survived.
I never had a Banh Mi in a restaurant setting. In fact I never had Banh Mi outside of Vietnam. The many, many times I had the chance to enjoy it there, usage of cilantro was liberal and thus for me something is missing without. YMMV.