If one kashers a pot by boiling water in it (and throwing rocks in so it overflows) or kashers silverware IN a pot, what is the status of the water afterwards? [I see that water can acquire some different status after certain uses, but I don't know if kashering is one of those situations]
Is the water totally useful or has it, by effecting a kosher status after touching the non-kosher surfaces, somehow taken the non-kosherness (if that's a thing) away so it shouldn't then be used? Is water constantly "self-kashering"?
L'ma'aseh, if I took my pork pot, wash it, wait a few days, then boil water and rocks in it, and, as it is boiling, throw some eggs in or some soup makings? Or should I dump the water and start fresh with a clean pot?