Bread made from Wheat Flour and other Flour

What are the brachos for multigrain bread?

With various types of multigrain bread on the market, the question arises which brachah rishonah and brachah acharonah should be said when eating them.

Hamotzi is recited on bread which contains one of the chameishes minei dagan (five types of grain): wheat, barley, rye, oats and spelt. When any of these five grains is added to kemach kitniyos (flour of some other type) to make bread, hamotzi is still recited, regardless of what the ratio is.

However, in order to bentch birchas hamazon (the after-blessing for bread) the chameishes minei dagan must comprise at least one sixth of the mixture, and at least a kezayis must be eaten. In fact, some opinions maintain that one must eat an amount containing an entire kezayis of dagan itself. Thus, in a case where only one sixth of the mixture consisted of dagan, and assuming that the dagan is evenly dispersed throughout the mixture, one would have to eat an entire pras, which equals six measures of a kezayis—and eat it all within the short time span known as kdei achilas pras, which could be as little as three or four minutes, a difficult task. Since this matter is in doubt, al hamichyah should be recited unless an entire pras (or an equivalent amount relative to the percentage of dagan) is eaten.

In a case where the chameishes minei dagan are less than a sixth of the mixture, it's a machlokes (halachic dispute) whether to say al hamichyah or borei nefashos. That being the case, we should avoid eating this “bread” by itself. One way to sidestep the problem is by eating first a kezayis of regular bread (made from dagan), and thus conclude with birchas hamazon. A second option is to eat this kind of “bread” along with both a kezayis of food after which we recite al hamichyah as well as a kezayis of food after which we recite borei nefashos.

The exception to the rules laid out above is when rice flour is added to wheat flour; because the rice tends to cling to the wheat and bring out its taste, so as long as the bread retains the taste of wheat, we recite hamotzi and bentch birchas hamazon. #493

https://halacha2go.com?number=493

Practical Halacha: One minute a day. By Horav Yosef Yeshaya Braun, shlita, Mara D'asra and member of the Badatz of Crown Heights.