Take the 2-minute tour ×  Is there any halachik problem with
eating fish and milk together? (A classic example is a bagel
with lox and cream cheese)  share|improve this question  6
Answers 6  Famous question. Rabbi Yosef Karo in his commentary
Bait Yosef (which would serve as a first draft of sorts of the
Shulchan Aruch) writes not to eat fish with milk (Yoreh De'ah
87:3). His Ashkenazic counterpart Rabbi Moshe Isserles famously
commented, "rabbi Karo mixed his milk with meat!" (נראה שנתערב
לרב בית יוסף בשר בחלב; Darkhei Moshe, ibid), as the Talmudic
quote regards fish with MEAT as being a health risk.  The fish-
and-milk business was omitted from Rabbi Karo's later work, the
Shulchan Aruch. So it's a question of how seriously we take the
original comment in the Bait Yosef.  Non-Hassidic Ashkenazim
simply follow Rabbi Isserles, that the whole statement was a
mistake, and therefore there's no problem.  Among Sephardic Jews
(who follow Rabbi Karo), and Hassidic Jews (who occasionally
follow Rabbi Karo's stricter