Immersion of Milk Frother
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Question
We bought a milk frother and heater (from Goldline). How should the frother be immersed? Is it enough to immerse the inside of the device, or must the entire casing be immersed? And if the entire device needs immersion, can the electrical area be covered with something?
Answer
Hello,
I am not familiar with the mentioned device. Therefore, I will outline the relevant rules:
If the device is manufactured by a Jew, it does not require immersion. If the device is manufactured by a non-Jew, even if the distributor is Jewish, the device requires immersion.
[Usually, such devices are manufactured in China and require immersion unless explicitly stated otherwise].
If the part of the device where the milk is held can be detached during normal use from the casing, only the part that comes into contact with the milk needs to be immersed.
If the device cannot be disassembled, the entire device must be immersed.
It is not permissible to cover any part of the device that requires immersion.
In case there is a concern of damage from immersion, there is a solution: give the device to a Jewish technician to disassemble a significant part and reassemble it. In this case, it is considered that the final assembly of the device is done by a Jew, and it is exempt from immersion.
This advice is only effective when something is disassembled in a 'craftsman-like manner', not something that anyone can disassemble and reassemble.
Source
Shulchan Aruch, Yoreh De'ah, Siman 121