From my understanding, the dough becomes chametz if it is not baked within 18 minutes. So, aren't all matzot 18 minutes? Like the words of the seder, what makes the "18 minute" matzot different from all other (non shmurah) matzot?

  • Many think dough doesn't necessarily become chametz after 18 minutes
    – Double AA
    Mar 17, 2015 at 2:51
  • @DoubleAA - is this a common opinion, now?
    – DanF
    Mar 17, 2015 at 2:57
  • I think it's just marketing/another way of saying it's not chametz...
    – Loewian
    Mar 17, 2015 at 3:02
  • (There are plenty of chametz/non-kosher for passover matzot on the market for the rest of the year)
    – Loewian
    Mar 17, 2015 at 3:03
  • Perhaps בצק החרש אם יש כיוצא בו שהחמיץ הרי זה אסור: גמ' אם אין שם כיוצא בו מהו א"ר אבהו אמר ר' שמעון בן לקיש כדי שילך אדם ממגדל נוניא לטבריא מיל ונימא מיל הא קמ"ל דשיעורא דמיל כממגדל נוניא ועד טבריא Mar 17, 2015 at 3:41

1 Answer 1


In current matzah parlance, “18-minute matzah” means that the entire matzah line is cleaned every 18 minutes


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .