[Avodah] [Areivim] kosher cabbage

[Micha Berger]

On Wed, Jul 21, 2010 at 06:58:23PM +0000, Gershon Dubin wrote:
: Demai does NOT require a beracha because rov amei ha'aretz me'asrim.

That doesn't answer my question.

Without the gezeira, demai would be mutar, because it's being chosheid
for a mi'ut. As you note. (If it weren't a mi'ut, demai would be pointless
as such produce would already be assur as a safeiq deOraisa lehachmir.)

Then chazal made the concept of demai, a taqanah that assur-ed the mi'ut.
So, removing terumah from demai is a qiyum of a derabbanan. Why does
neir Chanukah deserve a berakhah more than repairing demai does?

I realize I inconistently called demai a gezeira and a taqanah. I'm
leaving it in as an excuse to add this clarification. A gezeira is
something that protects us from violating a din deOraisa through habit
or accident. A taqanah is a law made along the same lines as Chazal's
understanding of the intent of the deOraisa. (Which, RMS should note,
requires their determining some aspect of the values implied by the
original mitzvah.)

Demai is therefore a likely a gezeira.

Tir'u baTov!
-Micha

-- 
Micha Berger             "The most prevalent illness of our generation is
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