[Avodah] When should I prepare the salt water for the Seder?

[Micha Berger]

On Tue, Mar 20, 2018 at 01:01:59AM +0200, Simon Montagu via Avodah wrote:
: > A. The salt water should be prepared before Shabbos. This is because
: > Shulchan Aruch (OC 321:2) rules that one may not prepare a large amount of
: > salt water on Shabbos, since this was done in the process of tanning hides.
: > The Mishnah Berurah (321:11) defines a large amount as more than one needs
: > for Shabbos.

: The Mishnah Berurah doesn't say that at all, in fact he looks from exactly
: the opposite perspective. He says that the issur is making more than one
: needs for Shabbat, and the reason that making a large amount is asur is
: because it looks like preparing for after Shabbat.

I don't see how the two differ.

The SA says that one may not prepare a lot. The MB ad loc says this means
more than one could explain as being necessary while still Shabbos.

"More than one needs for Shabbos"
and
"because it looks like preparing for after Shabbat"
both say that. RSM's version has the advantage of emphasizing the
appearance aspect of hakhanah, how is that "exactly the opposite"?

Tir'u baTov!
-Micha

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