Radical for These Days
Mar. 26th, 2009 12:37 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ymarkovhttp://www.kashrut.org/halacha/?law=kashering (excerpts):
* Glass, plastic, glazed china, glazed dishes, Corelle, Pyrex, Corningware, or glazed earthenware does not need any Koshering for Passover, since they do not retain any flavor.
* Sinks, refrigerators, trash cans, counters, dishwashers, stovetops, tables, cutting boards, mixmasters, silver kiddush cups, and anything not used with hot foods from the fire do not need any koshering.
* Glass, plastic, glazed china, glazed dishes, Corelle, Pyrex, Corningware, or glazed earthenware does not need any Koshering for Passover, since they do not retain any flavor.
* Sinks, refrigerators, trash cans, counters, dishwashers, stovetops, tables, cutting boards, mixmasters, silver kiddush cups, and anything not used with hot foods from the fire do not need any koshering.
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Re: true, but......
Date: 2009-03-27 01:12 am (UTC)You'll have, at most, iruy k'li rishon water going down on the maybe hametzdik surface, not the other way around. Unless you plug the sink, what will be the problem?
plastic is highly absorbent
Yes, soft plastic that's used for cold storage. Hard plastics that are used in hot products, like dishwashers, are not. Never heard about the 1-year rule - AFAIK, no such beast in halakha. Ben yomo is 24 hours.
Regarding dishwashers, see http://kashrut.org/forum/search.asp?keyword=dishwasher - half a dozen relevant questions and answers. Food residue in the drain - again, it's all washing down, not up. And even if it is up - just last week, we put a dairy plastic bowl in our fleishig dishwasher, and my rabbi (a Lubavitcher) ruled exactly like R' Abadi - that it's not a problem.
Pyrex is thermally-treated soda-lime glass - "the most prevalent type of glass" () If anything, it's even less absorbent than regular glass.
"It is somehow a problem" - yes, in our heads. We laypeople are just used to thinking "anything hot is problematic". IMHO most rabbis go along with that so as not to encourage laxity in other areas. Policy, not halakha.
Re: true, but......
Date: 2009-03-27 01:52 am (UTC)water backups do happen.....
(even really hot ones - did it at least twice)
Pirex and glass - I'll ask again, b/c I don't remember all details.
I never thought of Pirex baing a problem untill was told so.
"Food residue in the drain - again, it's all washing down, not up.
Doesn't the water circulate during the wash?
just last week, we put a dairy plastic bowl in our fleishig dishwasher
not a problem for what? - the dishwasher or the bowl or both?
did the bowl had dairy food in it?
I heard once that dishwasher is so hot, it kasheres everything inside it - but it was years ago, so don't remeber details.
the 1-year rule - AFAIK, no such beast in halakha. Ben yomo is 24 hours.
e-mailing my Rav now.
"It is somehow a problem" - yes, in our heads.
nop, not only in my head.
Here is from the link you provided:
http://kashrut.org/forum/viewpost.asp?mid=37945 :
"Drinking glasses can be used for either dairy or meat. Other glass dishes such as corelle, glazed china, pyrex and the like should be designated for meat or dairy. If one is used for the wrong food, it will not be an issue."
Re: true, but......
Date: 2009-03-27 03:56 pm (UTC)Note that R' Abadi says that mixing up whatever glass vessels is not an issue. I suspect that his advice here may be a precaution. You don't want to get too cavalier with meat and dairy. Policy again.
Re: true, but......
Date: 2009-03-27 02:04 am (UTC)so why does the plastic turn yellow? it doesn't oxidize.
Re: true, but......
Date: 2009-03-27 03:29 pm (UTC)Certain foods have very clingy residues and can discolor vessels made from softer plastics. I'd guess that acidic oils are a major factor here.