Cold cooked chicken was stored in a dairy plastic Container. What is the status of the plastic dairy container and if needed can it be kashered?
If the chicken was dry and cold, then it will not give over any taste, however if there was liquid or sauce from the chicken that touched the container, then it will depend on how long the chicken was stored in the container. If it was for more than 24 hours, the container is considered to have absorbed the taste of the sauce, and the container is trief. We don’t kasher plastic. If however the chicken was not in the container for 24 hours, (and the chicken was dry when it was put into the container) then the container only has to be washed out well with soap and water that isn’t hot.