. I do not know what Rav Breuer held regarding plain milk, but I do know this: In the 1970's (and onward) both Haolam and Migdal cheese were under KAJ hashgacha, and although Haolam was chalov yisrael, Migdal was not. (Haolam is still under KAJ, but Migdal is currently under the OU. I do not know when or why it changed.) Akiva Miller