[Avodah] Curdling of Non-Kosher Milk

[Prof. Aryeh A. Frimer]

From: "David Roth" <droth at pobox.com>

Can anyone provide a little more information about this milk clotting
criterion and the source for its use?

There will be an article with scientific data on the subject in a
forthcoming issue of Bar Ilan's Torah UMadda Journal BD"D. Indeed, as Chazal
indicate, the milk of non-kosher animals does not curdle forming cheese
(even if some kosher milk is added), while that of Kosher animals including
giraffes does. Rabbi Dr. Ari Zivitofsky should be able to comment further.

Aryeh

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Dr. Aryeh A. Frimer
Chemistry Dept., Bar-Ilan University
Ramat Gan 52900, ISRAEL
E-mail: FrimeA at mail.biu.ac.il