I accidentally put a cold milky (plastic) liquidizer into a hot parev soup that was made in a meaty pot. The liquidiser is rarely used for actual milky foods.
How do I kasher the liquidiser?
L’chachila this shouldn’t be done, however you do not have to kasher the pot or the liduidizer, since assume that the pot was not used that day.
Rema Y”D 95-3, CHochmas Odom 48-14.