The blessing of Hamotzi was established to be said over meal breads, which is defined as breads that one commonly establishes a meal over. The background behind this blessing is as follows: Bread is made from one of the five grains which is a Ha’adama ingredient, and when turned into a cooked dish becomes elevated to the blessing of Mezonos due to its ability to satiate a person. The sages further established a more elevated blessing for breads on which majority of people establish a meal over due to the significance of the food, and stated that one should recite the blessing of Hamotzi. Those baked breads and other products which people do not commonly establish a meal over remain the blessing of Mezonos, as will be explained in the next chapter.

[1] See Admur 168:8; Seder 2:1; Luach Birchas Hanehnin 8; Ketzos Hashulchan 48:1