Shulchan Aruch, OC 212:1 (with my own loose translation): All that is main, and with it is a subordinate (tafel) thing — one says a benediction on the main thing and exempts the subordinate ...
I've seen bread made with juice on airplanes and the insert says these are "mezonos" rolls. And, as we know, matzah is "HaMotzi." In the first instance, it looks like bread but we treat it like ...
My copy of "Guide to Blessings, The Brochos for Various Foods" compiled by Rabbi Naftali Hoffner (NCSY/OU) states that tortillas get the "Shehakol" blessing because they are made of maize (corn) ...