I never thought I’d be doing this as I was used to buying ready-baked challah from a kosher bakery. However, once I developed celiac and could no longer eat regular yeast dough, my husband found a bakery that specialized in kosher ready-made challah. Turns out, unfortunately, that in order to say Hamotzi (the blessing over bread), the challah needs to contain oat flour as that’s one of the grains ment...