Rosh Yeshiva Responds
Rabbi Linzer answers halakhic questions from rabbis and community members

5 04, 2026

Kashering and Using Sous Vide for Milk and Meat

April 5th, 2026|Bishul, Kashrut, Technology, Yoreh De'ah|

Question

Can a sous vide be used for both meat and dairy cooking?

What about kashering it, if necessary?

ANSWER

What Is Sous Vide?

Let’s begin by understanding the metziut. According to Wikipedia, sous vide is a method of cooking in which food is placed in a plastic pouch and cooked in a water bath at a precisely regulated temperature. During the cooking process, the food does not come into direct contact with the

2 06, 2024

Megillah Reading By Microphone

June 2nd, 2024|Disabilities, Electricity, Moadim, Orach Chayim, Purim, Shulchan Arukh, Synagogue, Technology|

QUESTION

Canada

At the school where I work, the Megillah reading will be conducted with a microphone, as it always has been. I am unable to change this practice, at least for this year.

What is the Rosh Yeshiva’s position on reading the Megillah with a microphone? Can one rely on the poskim who permit it?

For those attending a Megillah reading with a microphone, should they seek out another reading later not read with a microphone? Alternatively, can those standing close to the reader assume