Kolel L'horaah Ma'asis Crown Heights - Shiur 20 on halachic topics - by Rabbi Shraga Dovid Homnick, Sgan Rosh Kolel, on the question of kosher-for-Pesach alcohol: Honey mead in Shulchan Aruch, potato spirits in Rabbi Akiva Eiger's letter, and beet sugar in the great controversy of the Tzemach Tzedek surrounding kashering a factory

https://www.youtube.com/watch?v=I4k7wnU4gE0