Questions tagged [chametz-leaven]

Something made from one of the five grains, and which has been allowed to rise (leaven). Forbidden to eat or possess during Pesach (Passover).

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Cleaning clothes before Passover?

Does one have to clean all their dirty clothes before Pesach (on the principle of being careful to washout all the chametz from their house)? What is the general Halakha for your clothing collections (...
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Birkat hamazon for chametz on Passover

On Passover, if a Jew consumes Chametz because they have to for Pikuach Nefesh, do they recite Birkat Hamazon afterwards? Of course this would be more than the minimum amount to be liable on Pesach, (...
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Making matzah at home

This is a follow-up question to 18 minute matzah cutoff (and see also Where does the notion that the *entire* matza process must be done in under 18 minutes come from?) I know this isn't the standard ...
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Raw pasta on Pesach

How can raw pasta be considered chametz on Pesach if it is not fit for consumption (אינו ראוי לאכילת כלב)?
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18 minute matzah cutoff

Having learned some of the sources for baking matzah (OH 453-461, more or less), I discovered something that surprised me. The time for how long it takes to (possibly) become chametz is given as a ...
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What is Chametz?

During Pesach and Chag Matztzoth, there are many beliefs of what needs to be removed during this time, and what chametz actually is. I.e., there’s the removal of just yeast, then there’s the removal ...
Mikayah Yisrael's user avatar
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Does Bitul Bshishim apply to Chametz?

You’ve heard of the Halacha that a meat item smaller than a sixtieth in a dairy product is considered nullified, right? Well does that apply to something chametz in an otherwise non-chametz product?
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Chametz that is stuck to tape/velcro

What is one supposed to do with chametz that is stuck to something sticky like tape or velcro, that is impossible to remove completely but can be found and seen easily, in the lead up to pesach? For ...
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How is it permitted to sell chametz through an online agent? [duplicate]

While I seek out a rav to sell my chametz. Many people rely on selling their chametz online. The following questions occured to me about this... Does chametz need to be sold through a specific person ...
Dude's user avatar
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Oats for matzah - contemporary poskim

There are different opinions among the Rishonim about שבולת שועל, one of the "five grains" that can become chometz and can be used to make matzah. Some say that it is oats, and that seems to ...
MichoelR's user avatar
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Fish food on Pesach

In the Hidabrot this week they had the following statement: This means Fish food since it is disgusting for humans to eat it does not need to be Kosher for Pesach… I did a search on Otzer Hachochma ...
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what is chimutz chemichaly?

distantly related: Is chimutz a wholly physical phenomenon? I searched but could not find a question like this on the site but here it goes. Has there been any understanding of what חימוץ is? Meaning ...
fulltimekollelguy's user avatar
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Burning chametz before the sixth hour

The Mishna in Pesachim 1:5 says (Open Mishna translation): וְעוֹד אָמַר רַבִּי יְהוּדָה, שְׁתֵּי חַלּוֹת שֶׁל תּוֹדָה פְסוּלוֹת מֻנָּחוֹת עַל גַּג הָאִצְטַבָּא. כָּל זְמַן שֶׁמֻּנָּחוֹת, כָּל הָעָם ...
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Should a married woman nullify chametz too?

Rav Shimon Eider in the Halachos of Pesach (IX:C:5) says: "Some Poskim hold that a married woman should nullify personal chometz." However, in footnote 70 Rabbi Eider writes this isn't found ...
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Angels visiting Abraham during Pesach [duplicate]

I start it from the end: regarding Lot it is written (Bereishit 19:3): וַיִּפְצַר־בָּ֣ם מְאֹ֔ד וַיָּסֻ֣רוּ אֵלָ֔יו וַיָּבֹ֖אוּ אֶל־בֵּית֑וֹ וַיַּ֤עַשׂ לָהֶם֙ מִשְׁתֶּ֔ה וּמַצּ֥וֹת אָפָ֖ה וַיֹּאכֵֽלוּ׃...
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Someone who doesn't sell chametz gamur, yet accidentally put it with things to be sold

The following is purely hypothetical (;-)). Someone has the custom to not sell chametz gamur before Pesach, ie. real chametz items like cakes, cookies, bread, etc. They only sell things that might ...
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Making Chameitz Hefker on Shabbat

This year, because Erev Pesach is on Shabbat, the completion of the burning (done on Friday, after a search on Thursday night), is the second (slightly expanded) recitation of the Kol Chamira on ...
rosends's user avatar
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How much beer/whisky would one have to consume to be chayav m’doaraisa?

How much beer/whisky would one have to consume to be chayav m’doaraisa? Also why biblically is there a prohibition on liquid chometz if it’s in the form of a liquid and not leavened bread? We know by ...
David Feigen's user avatar
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Burning chametz when one still has chametz left over

While it is accepted that the mitzva of biur chametz can be accomplished in different ways (see e.g. Shulchan Aruch O.C. 445:1 and Mishna Berurah 445:1-2, cited here), there is also an accepted ...
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Must one sell poisonous Play-Doh to a non-Jew for Pesach?

Being that Play-Doh contains dough ingredients, and that one need not sell something that even a dog won't consume, may one improvise and put cyanide in their children's Play-Doh, thereby rendering it ...
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Burning chometz with an electric fire?

Assuming we treat electric appliances that create glowing red metal as fire in regard to shabbos, is anyone aware of any teshuva that discuss using it for burning chometz (aside from the Rashash ...
Josh Silverblatt's user avatar
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Can you eat foods during Passover, if you already opened and ate from the package before Passover?

Let's say that a person opens a jar of pickles that is kosher for Passover, and eats from it during the week before Passover starts. Can the jar still be used during Passover?
Dovid's user avatar
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Does food absorb a chametz ta'am if there is no heat (or equivalent) involved?

This is a case where I am fairly certain that I know the practical halacha, but don't understand the issues underlying the practice. Let's say you chop up some apples and nuts before Pesach on a ...
mweiss's user avatar
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7 votes
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Continuing a meal once chametz is prohibited

One starts a bread meal on the morning of erev pesach. One finishes eating all of the bread (and removes all crumbs etc.) before the end of the day's fourth hour, but wants to continue the meal by ...
Joel K's user avatar
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Kashrut Status of Certain Oral Tobacco Products During Pesach

NOTE: I plan to pose this question to a qualified Rav. But first I am trying to think through the relevant issues to get a sense of how one might pasken this. My question is regarding whether snus ...
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Parched grain at seder

Pesachim 109a has קליות given to the kids at Seder. Is there an issue of this "parched grain" being chametz? How would it be made? Like matzah? How would they make it appealing to kids?
Gary Huber's user avatar
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(Auto)paying for chametz on Pesach [duplicate]

My understanding is that one only acquires movable objects, such as food items, by moving them physically (e.g. lifting or pulling them; or by acquiring them along with land; or via chalipin exchange, ...
Loewian's user avatar
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Deriving benifit from Chametz on pesach [duplicate]

Someone asked this and I can't find the question anymore but i found a source to answer this. Can one derive benefit from chametz on Pesach?
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Pikuach nefesh and matzoh shopping [closed]

Apropos of this viral post: https://twitter.com/Dr_Ophelian/status/1247386646317633536. My understanding is that the principle of pikuach nefesh is not applied like this, but I am not certain why. ...
user4497063's user avatar
2 votes
1 answer
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Selling chametz before burning it?

During a shiur, I heard the Dayan of the Chasam Sofer first sold his chametz, and then bought chametz to burn. Why would someone specifically sell their chametz before biur chametz?
NJM's user avatar
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Is indirect "benefit" (Hana'ah) also forbidden?

Some things are forbidden via halacha in local terms, such as eating, but some things are so forbidden that we may not derive hana'ah, benefit from them in any way. Chameitz She'avar alav HaPesach, ...
rosends's user avatar
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Collecting water before pesach

People who are worried about chometz in water on pesach collect water before pesach so it can be Me'vutal before pesach. However won't they cause themselves a bigger problem? If they are worried for ...
Do Ki's user avatar
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Can you buy chametz during Pesach that will be delivered after Pesach?

As an example, during Hol Hamo'ed Pesach, could you buy chametz online knowing that it will arrive after Pesach? My assumption is that it would be OK, as the buyer doesn't actually own the product ...
DanF's user avatar
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When do you own the food in your farm-share box?

In a farm share (CSA, community-supported agriculture), at the beginning of a season you subscribe to and pay for a share, and then you receive regular deliveries of whatever food those farms produced ...
Monica Cellio's user avatar
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Medical dental supplies Kashrut for Passover considerations

Should one be suspicious of any dental supplies for being hametz when one goes for a dental appointment during Passover? Let's put rules of labor and scheduling-for-hol hamoed aside: I'm asking ...
Yaakov's user avatar
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2 votes
1 answer
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Is smoke chametz?

Let's say while people are burning chametz, (this is a public burning area where many people come to burn the chametz in a big pile) someone puts a grill over the smoke and puts a king salmon on the ...
DanF's user avatar
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1 vote
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What's the minimal requirement required to nullify chametz kept in a public fridge?

Let's say someone keeps chametz in a shared office fridge. The fridge is used by both Jews and non-Jews. On the morning of Erev Pesach, prior to the time that it is prohibited to own chametz, the ...
DanF's user avatar
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At what point do we need to be concerned that wheat (or any of the 5 grains) becomes chametz?

I am not that familiar with the science of fermentation as it applies to chimutz. My understanding is that we have a concern that if the wheat becomes wet, it starts to be chamet after a certain ...
DanF's user avatar
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Can being fastidious and delicate (איסטניס) get lenience in cleaning for Pesach?

The agricultural and technological revolutions changed a lot in our perception of food and we all became more fastidious and delicate (is it good for איסטניס?) - we even have expiration dates on ...
Al Berko's user avatar
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Cointreau on Passover

Can those who do not rely on heter mechira (selling) for real chametz keep Cointreau over Passover? What is the origin of the alcohol in Cointreau? Does Cointreau contain grain alcohol from, e.g., ...
Loewian's user avatar
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3 votes
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Selling chametz if two people share a house?

I was just wondering a general law about the sale of chametz (specifically through chabad.org but also in general), that if two people jointly own a house, then should they each individually fill out ...
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7 votes
1 answer
628 views

Are there communities which permit oats on Pesach?

It's a bit controversial that oats are considered chametz. While Rashi (Pesachim 35b, et. al.) translates Shiboles Shu'al as oats, not all Rishonim agree to this definition. For instance, the Rambam (...
DonielF's user avatar
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Bedikas Chametz if staying at someones house (30 days prior to and) during Pesach

I was looking on halachapedia and different sources, but I couldn't find an answer to a particular question: If a Jew is staying at someone else's house (whether a Jew or a gentile, but let's say it'...
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1 answer
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Chometz Gamur after Pesach, buying and eating

For someone who is machpid not to sell chometz gamur, but either burns, gives away, eats or throws it in the trash, etc, before Pesach, would he also be machpid not to buy and consume chometz gamur ...
Benjamin G's user avatar
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1 answer
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Keeping flour mixed with mei peiros on Pesach

According to the OU and other kashrus agencies (https://oukosher.org/passover/articles/chametz-when-to-peddle-when-to-purge/) cookies and even licorice are considered chametz gamur which one may not ...
wfb's user avatar
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Why isn't Amaretto Kosher for Passover?

I was recently told that Amaretto isn't Kosher for Passover (as I never drink it, I don't much care, but it got me very curious, as to the best of my knowledge there is nothing in its ingredients that ...
DD1's user avatar
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When does ethanol become Chametz?

I don’t know much about chemistry or alcohol, so please bear with me for a moment. At what point does wheat- or barley-derived ethanol become Chametz? Is it naturally Chametz, or does it require a ...
DonielF's user avatar
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4 votes
2 answers
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Can you say the Birkas Hagomel on Shabbos or Pesach?

We do not say “Mizmor LeSodoh” on those days when a Korban Todah could not be brought. So we do not say it on Shabbos or Yom Tov because you could not bring individual offerings on those days and we ...
Avrohom Yitzchok's user avatar
7 votes
1 answer
3k views

Why are Oats Chametz if oats cannot rise

Oats do not have gluten so they cannot rise - like rice and other such grains. I could understand why they would be kitniot but why are they chametz? I know in arvei psachim there is an opinion that ...
Noam Yo Tom's user avatar
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376 views

Why is Chametz burned instead of being donated to charity on Passover?

Slight preface: I’m Jewish, but secular at best. So I know “how things work” in some ways, but still have questions from my own perspective. That said, one aspect of Passover has always confused me: ...
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