Piskei harosh
Orach chaim hakadosh!
Is shrimp kosher
Jacob ben Asher
German rabbinic authority (c. - c. )
Jacob ben Asher (c. –), also known as Ba'al ha-Turim as well as Yaakov ben haRosh, was an influential Medievalrabbinic authority.
Baal haturim onlineHe is often referred to as the Ba'al ha-Turim ("Author of the Turim"), after his main work, the Arba'ah Turim ("Four Columns").
Biography
He was probably born in the Holy Roman Empire at Cologne about and probably died at Toledo, then in the Kingdom of Castile, in [1][2][3]
He was the third son of the Asher ben Jehiel (known as the "Rosh"), a rabbi of the Holy Roman Empire who, in , moved to Toledo in Castile, due to increasing persecution of Jews in his native Germany.
Besides his father, who was his principal teacher, Jacob quotes very often in the Turim his elder brother Jehiel; once his brother Judah[4] and once his uncle Chaim.[5]
Some say Jacob succeeded his father as the rabbi of the Jewish community of Toledo (Zacuto), wh