Doubtful Utensil Requiring Immersion
Question
Hello, I work in a non-Orthodox workplace where there is a milk frother, and I am not sure if it has been immersed. Can I use the frother even though it's uncertain if it has been immersed? Thank you very much
Answer
Greetings and blessings
Since the immersion of metal utensils is a Torah obligation, it is forbidden to use a utensil if there is doubt whether it has been immersed. However, if the utensil is not made of metal but of glass, there is room to be lenient in a case of doubt when it is impossible to ascertain what happened.
It is important to note that if it is a professional system requiring installation by a technician, and the technician is Jewish, immersion is not required even if the device itself was manufactured by a non-Jew.
Wishing you great success.
Source
Shulchan Aruch, Yoreh De'ah, Siman 120