By Rabbi Yair Hoffman for 5tjt.com His name is Rav Daniel Osher Kleinman, a Rav in Flatbush, and he is responsible for bringing us the halachic psakim of Rav Shmuel Kamenetsky in his Kovetz Halachos series on Shabbos and the Yomim Tovim, along with remarkable explanations.  That series will be reprinted for quite some time, […]