Dear Rabbi Simon,
I have a few Pesach-related questions:
Am I allowed to buy ready cut & peeled vegetables like carrots and butternut from regular supermarkets?
Also, can I use my hostess trolley for Pesach (we use it every Shabbat for chametz)? It heats to about 80 C. If I am allowed to, what do I need to do to Kasher it?
Lastly (for now), how can I ready my induction hob for Pesach use?
Thank you for your questions.
Regarding the first question, this is not recommended as citric acid (an antioxidant) is often used to inhibit discoloration. Citric acid may be derived from chametz sources.
Hostess trolley: This is a judgement call, as readying it for Pesach use is difficult and of uncertain effectiveness. My suggestion is that you leave it for the rest of the year, but not for Pesach.
Induction hob: As with most koshering processes, first clean thoroughly and don’t use (with chametz) for twenty-four hours. Then turn on to maximum heat for half an hour with an iron pot or simmer ring, etc. in place. This is essential, otherwise the stove top will not heat up effectively. Also (carefully) pour hot water at a rolling boil from a kettle over the stove top. Note that an induction stove is not suited for Yom Tov use (and certainly not Shabbos), since the heating is activated (and terminated) by the presence of the pot.
Have an uplifting and redemptive Pesach!
Rabbi Rashi Simon