Is this what you're referring to? You shall not cook a kid in its mother's milk. (Exodus 34:26)[0] The Talmud goes into detail as to how to extrapolate all me

Is this what you're referring to? You shall not cook a kid in its mother's milk. (Exodus 34:26)[0] The Talmud goes into detail as to how to extrapolate all meat in all milk, but it is considered a biblical prohibition, not rabbinical. [0] http://www.chabad.org/library/bible_cdo/aid/9895#v=26 http://www.chabad.org/library/bible_cdo/aid/9895#v=26