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There is a known story of how one time a person brought a giant carrot on Erev Pesach to the Belzer Rebbe (back in Europe) for Karpas. After the donor left, he said "burn it with the Chometz". As the donor came home, his non-Jewish maid told him that she saw that he wanted this carrot to be a special carrot for his Rebbe. To help, she decided to water it with beer.

The farmer ran back and told the Rebbe what happened. The Chassidim were amazed at this miraculous occurrence, but the Rebbe answered "It was no miracle. It's just that we don't use carrots for karpas".

I have two questions:

  1. Is there a halacha prohibiting one from eating a food on pesach whose entire growth was from Chometz? (Or was it a Chumra?)
  2. Does this rule apply throughout the year (is one permitted to eat a carrot that grew on blood, for example)?
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I heard today that someone somewhere discusses the case of a chicken that ate nothing but insects. – Baal Shemot Tovot Apr 17 '12 at 23:17
do you have a source for the story? – Menachem May 2 '12 at 6:19
up vote 6 down vote accepted

Rav Moshe Feinstein discusses the milk of an animal which ate chametz.

From שו"ת אגרות משה אורח חיים חלק א סימן קמז

ונמצא לפי חדוש זה שחלב של בהמת נכרי שאכלה חמץ אין להחמיר אף לבעלי נפש כיון שאף להרמ"א אין מקום לאסור. זהו הנלע"ד בסוגיא זו להלכה וגם למעשה הכותב בימי עניו ומרודו ומצפה לישועת ה' גיסו כאחיו אוהבו, משה פיינשטיין

He concludes that one may drink milk that comes from an animal that ate chametz. He says there is no reason to be machmir whatsoever.

I recommend you take a look at the full teshuva. He discusses the Rama who discusses the machloket of a chicken that ate nothing but issurim.

דרכי משה הקצר יורה דעה סימן ס

במרדכי ביבמות פרק אלמנה לכהן גדול (סי' סו) בהמה או תרנגולת שנתפטמה בדבר האסור או שרצים שריא אבל בתוספות דתמורה פרק כל האסורים (לא. ד"ה שינקה) כתבו דאם לא נתפטמה כל ימיה רק באיסור אסורה ועיין לקמן סימן פ"א (אות ז):‏

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