I am going on holiday, renting a student lodge. The cooking facility is an induction hob.
1)- How can I use it; does it need Koshering? Can it be koshered?
2)- If I use a “converter disk” will I be able to use the cooker without koshering?
3)- Can I use it on Shabbat with/without a “converter disk”?
Buying the converter disk is the best option. Kashering the glass top is controversial, especially if some solid, hot trief food fell on the bottom of the hot pot. Then the glass would need real hagalah, which is controversial if it can be done to glass.
Using a induction burner on Shabbos is problematic since removing the pot from the burner will turn the stove off. This applies to Shabbos and Yom Tov.