If in a canteen there is 100% separation between haraam and halaal foods, but the glass plates used are the same, but are washed after the haraam food

Answer

If there is 100% separation and the halaal section is under constant –full time- Muslim supervision, then it will be permissible for Muslims to eat the food. But, the plates must also be separate. The plates from which Muslims eat may not be the same plates in which pork and other haraam food are served. It is revolting for a Muslim to eat from the same plate in which pork was served even if the plate has been washed with the waters of the oceans. In this scenario washing is not sufficient. The plates have to incumbently remain in the Muslim section and be used for only Muslims. Surely, you will not eat from a washed-out chamber pot regardless of the Fiqhi ruling. In fact, you will not eat out from a brand new chamber pot.