Gemara

(Mishnah): All foods join... to the Shi'ur of two meals for an Eruv.

(Rav): Half a Log of wine is the Shi'ur for Eruv.

Question (Beraisa - R. Shimon ben Elazar): The Shi'ur for wine is enough to eat [two meals] with it.

Answer: The Beraisa refers to cooked wine.

(Beraisa - R. Shimon ben Elazar): The Shi'ur for vinegar is enough to dip [for two meals].

Version #1 (Rav Gidal): This means enough to dip two meals consisting of vegetables.

Version #2 (Rav Gidal): This means enough to dip vegetables eaten in two [bread] meals. (end of Version #2)

29b: [The Shi'ur of beer is two Revi'iyos,] since one cup (a Revi'is) in the morning and one in the evening sustain a person!

(Rav Yehudah): The Shi'ur for any condiment that is eaten with bread is enough to accompany bread for two meals. The Shi'ur for anything else is enough to eat two meals of it;

The Shi'ur for Chai (raw) meat is enough to eat two meals of it.

(Rabah): The Shi'ur for roasted meat is enough to eat with two meals of bread.

(Rav Yosef): The Shi'ur is enough to eat two meals of it.

Support (Rav Yosef, for himself): Persians eat roasted meat without bread.

Objection (Abaye): Are Persians the majority of the world?!

This is left difficult.

49a (Rav Yehudah): If one divided his Eruv [into two Kelim], it is invalid.

Suggestion: This is like Beis Shamai!

(Beraisa - Beis Shamai): If five people gave for the Eruv and it was put in two Kelim, it is invalid;

Beis Hillel are Machshir.

Rejection: It is even like Beis Hillel. They are Machshir only when the Kli was full, and he was forced to use another Kli. They agree that if one deliberately divides it among two Kelim, it is invalid.

71a (Mishnah): If Reuven [had two neighbors in the Mavoy, and he] was a partner with one in wine and with one in oil, they must be Me'arev;

R. Shimon says, they need not be Me'arev.

71b (Rav Yosef): R. Shimon holds like R. Yochanan ben Nuri, and Chachamim hold like Chachamim:

(Mishnah): If [Terumah] oil is floating on top of [Terumah] wine and a Tevul Yom touched the oil, only the oil is Nifsal. (It is not considered connected to the wine);

R. Yochanan ben Nuri says, they are connected. (Both are Nifsalim.)

80b (Beraisa): If the food [of the Eruv] was totally finished:

If he adds more of the same food, he need not inform the others;

If he adds a different food, he must inform the others.

Yerushalmi (Eruvin 3:1, 19a): We may be Me'arev with salted meat. We may be Me'arev with raw meat, like the Mishnah says that [when Yom Kipur falls on Erev Shabbos, at night Kohanim] Bavli'im would eat it (the Chatas of Yom Kipur) raw, for they are not particular.

Rishonim

Rif (7b): The Shi'ur for wine is in order to eat with it for two meals. This refers to Mevushal wine. The Shi'ur for non-Mevushal wine is two Revi'iyos. The Halachah follows Rabah, who say that the Shi'ur for roasted meat is to eat two meals with it.

Rambam (Hilchos Eruvin 1:11): We may be Mishtatef (make an Eruv in a Mavoy) with raw wine. The Shi'ur is two Revi'iyos for everyone. The same applies to beer... All foods join to the Shi'ur for Shituf. All these matters are accompaniments for bread. Therefore, these are the Shi'urim.

Rebuttal (Ra'avad): The Gemara said that all foods join towards two meals only regarding Eruv Techumim, for which the Shi'ur is two meals. The Shi'ur for Shituf Mavo'os is not always two meals. It is two meals only for many residents. For few residents, it is k'Grogeres per person. Since Eruv Techumim is two meals for even one person, therefore all foods join. Shituf Mavo'os is for many people. How can all foods join? A divided Eruv is invalid (49a)! If different foods join, one can bring wine, and another will bring oil, and another vinegar, and they will put it in one Kli! Also, if the food was totally finished, if he adds more of a different food, he must inform the others (80b). If at the beginning one may make an Eruv from different foods, why were Chachamim so particular about two foods at the end? Rather, at the beginning one may make an Eruv only from one food. Therefore, one who gives to the Bnei Mavoy may give only one species. However, at the end they were lenient, that if it was diminished, one may add another species without informing. The Sugya on 71a clearly shows that we require connected foods.

Magid Mishneh: Tosfos holds like the Rambam, that the Mishnah says that all foods join to the Shi'ur for two meals also regarding Shituf Mavo'os. The Rashba did not decide.

Magid Mishneh (10): The Rif and Rambam do not bring the second version regarding vinegar. They simply bring the Beraisa. They rule like Version #1. The Rashba says that Mevushal wine is a dessert, and not for dipping. Therefore, the Shi'ur is what is brought for dessert for two meals.

Poskim

Shulchan Aruch (OC 386:6): Any food normally used to accompany bread, its Shi'ur [for Shituf Mavo'os] is enough to accompany bread for two meals. Any food not normally used to accompany bread, its Shi'ur is enough to eat two meals of it.

Beis Yosef (DH v'Chol): Rashi explains that 'for two meals' is to eat two meals totally of that food.

Shulchan Aruch (ibid.): Raw meat is not an accompaniment. One needs enough to eat two meals of it. Roasted meat is an accompaniment. Its Shi'ur is enough to accompany bread for two meals

Magen Avraham (6): Even if in some places they eat roasted meat without bread, we are not concerned for this. The Halachah is based on most people.

Kaf ha'Chayim (42): Even where they eat it without bread, the Shi'ur is to accompany bread for two meals.

Mishnah Berurah (34): Also cooked meat has the law of roasted meat.

Bi'ur Halachah (DH v'Basar): The Rashba and Ritva asked that people do not eat raw meat! They answered that it is too salty to eat. Salting it so much made it so soft that it is somewhat edible. The Ritva said that alternatively, Chai means half-cooked, like we say about Ben Sorer u'Moreh (Sanhedrin 70a). This is considered proper to eat.

Eliyahu Rabah (10): The Yerushalmi lists salted meat and raw meat separately! (This connotes that raw meat is not salted.) This is difficult for the Rashba.

Kaf ha'Chayim (41): The Yerushalmi connotes that it is raw. (It learned from the Chatas. There was no Heter to cook it during the day (Yom Kipur) or at night (Shabbos).) The Chayei Adam rules like the Shulchan Aruch (he permits even if it is not salted), but R. Zalman rules like the Rashba. Tosefes Shabbos says that according to the Magen Avraham in 308 (below), who permits moving soft raw meat because one can eat it, perhaps the same applies here. Raw fish is not edible at all unless it is salted (308:32).

Tziyon vi'Yerushalayim (on Yerushalmi 19a): How can the Yerushalmi learn from the Chatas to [all] raw meat? Perhaps a goat is different, for it is soft!

Shulchan Aruch (ibid.): Vinegar and Mevushal wine are accompaniments. Non-Mevushal wine is not an accompaniment. Its Shi'ur is two Revi'iyos. This is the Shi'ur also for other drinks.

Beis Yosef (DH u'Mah she'Chasav v'Chen): The Gemara connotes that other drinks are like beer.

Mishnah Berurah (36): The Shulchan Aruch connotes that it is enough to accompany bread for two meals. Some say that it is enough for dessert for two meals. Most Poskim do not say so.

Kaf ha'Chayim (45): Ma'amar Mordechai says that the Beraisa connotes that it is not for dessert, rather, to eat bread for two meals with it. Rashi, the Rambam and R. Yehonason are unlike the Rashba. He asked why the Beis Yosef and other Poskim did not mention this argument. Eshel Avraham says that the Shi'ur is two meals of whatever it is proper for, be it to eat [by itself], to dip bread in it, or for dessert.

Kaf ha'Chayim (46): Raw wine means that it is not Mevushal (Prishah).

Shulchan Aruch (308:31): One may move raw meat, even if it is not salted at all, for one could eat it raw.

Magen Avraham (56): The Yere'im and Ba'al ha'Ma'or say that we discuss a soft species, which one can eat [raw]. If one cannot eat it raw, one may not move it, since it is proper for people [after it is cooked].