Whole Wheat Flour

In some factories today, the bran is removed from the whole wheat flour and then recombined. In such a case, the bran is not factored in for the shiur of flour (שו"ע סי' שכ"ד ס"ג ). Thus, one must add 15% to the ordinary amount to be able to make the bracha. Accordingly, one may make a bracha for 1.92 kg according to Rav Chaim Na’eh and 2.59 kg [approx. 21.5 US cups] according to the Chazon Ish (מדריך הכשרות עדה"ח תשע"ו עמ' 109).

‘Rubinfeld’ brand whole wheat flour (Eidah Chareidis) does not need the extra 15% (this is the case as of now).