Tea in a Kli Shlishi Question May I make tea in a kli shlishi on Shabbos? Rav Auerbach The Chazon Ish ruled that kalei habishul are cooked even in a kli shlishi. However, the Mishnah Berurah (318:47) rules that it is permitted to put bread into a kli shlishi, and we do not say that there is bishul after afiyah. There are those who claim that there is a difference between that halacha and the halacha of kalei habishul, bringing proof from the fact that the Mishnah Berurah (ibi