[Avodah] Real Chazon Ish Shiurim

[micha at aishdas.org]

See pp 10-11 from a booklet put out by R Hadar Yehudah Margolin, available at www.dafyomi.co.il/lectures/reviis/kuntras-kzayis.pdf

What we call "Chazon Ish Shiurim" is a mistake. The measures given for the Seder were not intended as iqar hadin, but included a safety margin beyond the largest known shitah.

When it comes to Berakhos, you cannot make a berakhah for nothing. So when the CI says that a kezayis for a berakhah is 1/3 of a contemporary egg, he is pretty sure that is the actual halakhah.

R Chaim Kanievsky is later quoted as saying his uncle's kazayis comes to 30-33 cc (a/ka 30-33 ml, or 1-1.1 floz). R Moshe's Shiur, 31.2 cc (just a shade over 1 floz), is in that range.

As I noticed comparing R Moshe Feinstein's shiurim and the Arukh haShulchan's, the Litvaks who put halachic weight to accepted practice are pretty consistent.


Shetir'u baTov!
Micha
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