Dishes and pans used for chametz are not used on Pesach. For some people, that means buying duplicates of everything for the week of Pesach. However, there is a cheaper way: koshering kitchen utensils for Pesach.
The rabbis rule that the koshering method must parallel the way the chametz got there in the first place. That means trays used for baking must be heated under a very high temperature. Saucepans must be immersed in boiling water. Glass must be washed thoroughly (three times) to be made kosher for Pesach. Ceramic and wood may never be koshered. Consult your rabbi for more details!
In Israel, in the days leading up to Pesach, you may
find sidewalk stands with cauldrons of boiling water and
blow torches, ready to kosher people's metal cutlery, pots and pans.The long queues are a testimony to the commitment of so many Jews to observe the laws of Pesach to the letter.