Im assuming the pot you use to kasher all the other utensils has to be brand new or pesachdik?
Posted by malka|March 26, 2020
The pot used to Kasher within does not need to be new, it can even be Chametz. The only criteria is that is cannot have been used in the previous 24 hours.
For further questions, please refer you can check this list out: https://oukosher.org/passover/how-to-kasher-your-kitchen-for-passover/