Tzvi Pesach Frank

Tzvi Pesach Frank (; 20 January 1873 – 10 December 1960) was a renowned halachic scholar and served as Chief Rabbi of Jerusalem for several decades (1936-1960).

Biography Frank was born in Kovno, Vilna Governorate, the son of Rabbi Yehuda Leib Frank and Malka Silman, who were active in the Hovevei Zion organization in Kovno. He studied in Lithuanian yeshivas, learning under Rabbi Eliezer Gordon, among others.

In 1892, he emigrated to Eretz Yisrael with his brother Tanhum, his sister Zippora and his first cousin, Rabbi Shmuel Hillel Shenker. His parents arrived in 1893. Tzvi Pesach continued his studies in yeshivas in Jerusalem. His father was one of the founders of Hadera.

In 1907, Frank was appointed dayan in the Jerusalem Beth Din headed by Rabbi Shmuel Salant, the Chief Rabbi of Jerusalem. Frank served on this Beth Din for nearly 60 years, eventually becoming Av Beit Din (head of the rabbinical court) and Rav of Jerusalem. That, in the summer of 1944, it was permissible to drink powdered milk that was imported to Israel from the United States, removing powdered milk from the category of needing to be Chalav Yisrael (supervised by a Jew) (this ruling was opposed by the Chazon Ish); That gelatin from nonslaughtered animal sources are permissible

Frank also ruled that one may not use a non-battery electric menorah on Hanukkah since the menorah must contain enough fuel at the time of lighting to burn for at least half an hour after nightfall.