Kashering For Passover
One of the many preparations one must make for Pesach is kashering, a process to prepare chametz vessels for Pesach use. (Although most people only kasher their utensils in preparation for Pesach, the following directions apply to kashering utensils all year-round as well.) As with all areas of halachah, those who are unsure of how to apply the rules of kashering to their situation should consult their local Orthodox Rabbi.
There are two steps in kashering:
1. Cleaning—removing all tangible traces of chametz, and
2. Purging—using heat to remove all absorbed chametz flavor.
All chametz utensils that will be used for Pesach must first be thoroughly cleaned.
This involves the removal of all food, rust, dirt, calcium deposits and anything else that protrudes; it does not include the removal of discolorations. Items which have narrow cracks, crevices, deep scratches or other areas that cannot easily be cleaned, cannot be kashered for Pesach. Therefore, the following, for example, cannot be kashered:
• Decanters or baby bottles (due to their narrow necks)
• Filters/screens over drains in sinks
• Knives (or other utensils) where food or dirt can get trapped between the blade and handle
• Slotted spoons
Additionally, the common custom is to cover tables, counters, refrigerator shelves and other areas where one might not have been able to clean away every trace of chametz. CONTINUED......