Ninja Blender - Kashering and Immersion
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Question
Hello, We purchased a Ninja blender. The container is made of glass with a heating element at the bottom, and the blade is installed in the body of the container. A. Is there a need for kashering because of the blades? B. What is the ruling on immersion (when it is explicitly stated not to immerse the heating element, is it possible to immerse only the glass or is the entire container required)? Thank you very much.
Answer
Hello,
A. The blades should be kashered. If it is possible to heat water in the blender itself until boiling, you can heat water up to the level of the blades, and the boiling water in the vessel will kasher the blades.
B. If the container can be detached from the heating element, only the container with the blades should be immersed. However, if the container is attached to the heating element, the entire unit requires immersion.
If it is not possible to immerse the entire appliance, a Jewish technician should be asked to disassemble and reassemble a significant part that requires skill to assemble.
Source
Shulchan Aruch, Yoreh De'ah, Siman 120