Our Mishnah permits separating [the yolk and white of] an egg in a mustard strainer.

A clump of mustard - R. Yosi citing R. Eliezer says that he crushes it by hand, but not with a Kli;

R. Yakov bar Acha citing R. Yochanan citing R. Yanai says that he may crush it by hand or with a Kli.

R. Yochanan [to R. Yosi]: (Why do you forbid with a Kli - because it is how people do during the week?) People do not do so all the time! (Sometimes they do by hand, therefore either way is permitted. We explained this partially like SEFER MASHBI'ACH.)

(R. Chizkiyah citing R. Avahu citing R. Yochanan): One may crush it by hand or with a Kli.

One may make Yeinomilin on Shabbos;

(R. Yosah citing R. Yochanan): This is [a drink composed of] wine, honey and peppers.

(Mishnah): [On Shabbos] we may not soak Chiltis (a plant whose leaves are used for a spice. It is soaked and used for medicinal purposes) in lukewarm water, but we may put it in vinegar;

We do not soak vetch (it is usually used for animal food) to remove the Pesoles, nor do we rub it, but we may put it in a sieve or basket.

We do not sift straw in a sieve, nor do we put it in a high place in order that the chaff will fall. However, one may take it in a sieve to put in the feeding trough.

(Gemara - R. Mana): Our Mishnah means that one may put in front of him [what he wants to eat now] into vinegar.

(Rav Huna): [It is forbidden to soak Chiltis] only in lukewarm water, but it is permitted in cold water.

(R. Yochanan citing R. Yanai): Even in cold water is forbidden.

Question (R. Yochanan, to R. Yanai): Does the Mishnah not say [that it is forbidden] only in lukewarm water? Was [lukewarm] taught for naught?!

(Rav Huna): One may drink Mei Chiltis (water in which it was soaked) on Shabbos.

(Shmuel): Chiltis itself, healthy people eat it.

(Rav Huna): One who eats the weight of a Zuz (about four grams) of it, he becomes dangerously sick, and his skin comes off [due to inflammation].

R. Ba ate the weight of a Zuz of it, and [immediately] entered the river (to cool off).

(Mishnah): We do not soak vetch.

This is due to Borer (it removes the Pesoles).

(Mishnah): And we do not rub it.

This is due to Dash (the shell comes off).

(Mishnah): We do not sift straw in a sieve, nor do we put it in a high place in order that the chaff will fall.

This is due to sifting.

(Mishnah - R. Dosa): One may sweep in front of a Petem (an animal being fattened) and remove [extra] food to the side due to Rei'i (this will be explained);

Chachamim forbid.

One may take [food] from in front of one animal and put it in front of another animal on Shabbos.

(Gemara): [R. Dosa permits] because what a Petem leaves over, a [regular] grazing animal eats [so it is for a need. Chachamim decree to forbid even in a Kli, lest one sweep on the ground and even out craters - PNEI MEIR.]

Question: May one take [food] from in front of this animal and put it in front of this animal?

Question: Does our Mishnah not teach this?! One may take from in front of one animal and put it in front of another animal on Shabbos.

Answer: Our Mishnah permits [putting it in front of] another animal of the same species. We ask about [putting it in front of] a different species.

Answer (Beraisa): One may take from in front of a donkey (it does not drool into its food) and put it in front of a cow [which drools, but not vice-versa]. One may take food from in front of an animal with a bad mouth (a donkey is not picky about its food) and put it by one with a good mouth (a cow is picky - PNEI MOSHE. This is a mere Siman; it is not the reason for the law.)