Rabbi Aryeh Lebowitz

I don't feel that I need to pass him the way I hold on this.

Okay, what about plastic?

This is one of the more contentious issues.

Let's explain.

When it comes to kashering plastic, there's a Machlokas.

Rav Moshe says that you're not allowed to kasher rubber, which is made out of chemical components.

If it's made out of wood, then it's a different story.

But if it's made out of chemical components, because rubbers are brand new material that they didn't have in the times of Chazal, and therefore there are no dinam of kashering, so we assume that it just cannot be kashered.

And l'chorah, if that's true of rubber, it's true of plastic as well.

Ramosha is a little bit of a steve, because when it comes to Teflon, Rabbi Eider, Ramosha writes that you can kashrut.

Rabbi Eider said, yeah, Ramosha was machmir, not to kashrut plastic for Pesach.

for the rest of the year, for milk, flesh, or whatever, for treif, rather, he does allow kashering plastic.

Tzitz Eliezer, Chalik Dalitzin Vav, says that you can kasher plastic no matter what.

Kibolo kachpolto, it's a simple rule of kashering, that however it absorbs the taste, that's how it will depolate the taste.

Now, the only added wrinkle over here is that we said that you can't kasher klei harez,

even with Liban, because we're afraid you're not going to want to do a real Liban because it's going to break.

Well, plastic might melt if a person exposes it to intense heat.

So for that reason, some poskim are opposed to kashering plastic.

And that's where Ben Siron Abba Shaul writes as well, that maybe one should not kasher plastic.

Rav Shechter has told me that, generally speaking, we kasher plastic throughout the year, but not on Pesach.