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

11 02, 2011

Hilkhot Kashrut: Taste Transfer and Pickling

February 11th, 2011|Kashrut|

The Gemara recognizes a number of ways in which taste can transfer from one food to another without the presence of heat.   First, there can be surface transfer when one or both of the foods are moist, such as when cheese touches a piece of meat.  In most cases, this requires a mere rinsing off of the items, although in  some cases where rinsing is not sufficient to remove the adulterating film on the surface, a more vigorous scrubbing or, when that would be counter-productive, a scraping would be required (Shulkhan Arukh, YD, 91:1,