The Meals of Shabbat: Difference between revisions

* (1) The Bach 291:3 writes that the reason to have a [[KeBaytzah]] is that it is preferable to have a Kebaytzeh in order to be obligated to make Birkat HaMazon, even though the actual standard halacha is that someone who ate only a Kezayit one is obligated to make Birkat HaMazon. The Eliyah Rabba (291:3) and Hagahot Ben Aryeh (on Behag Shabbat chap 16), however, reject the Bach because they understand that there's no preference for having a [[KeBaytzah]] in terms of Birkat HaMazon.  

* (2) The Machasit HaShekel 291:1 writes that the reason a [[KeBaytzah]] is necessary is order to make it into a significant meal and not just a snack, though after the fact if one eats only one Kezayit one fulfilled ones obligation. Though, according to this explanation, the Magen Avraham 291:1 and Mishna Brurah 291:2 explain that really slightly more than a [[KeBaytzah]] is necessary because a significant meal is defined in Hilchot Mincha (S"A 232) to be more than a KeBeytzah.  

* (4) Hagahot Ben Aryeh (on Behag Shabbat chap 16, authored by Rav Zev Wolf Ben Aryeh, father of Rav Yisrael Salanter) explains that the Behag is only discussing a case where one wants to have Seudat Shelishit immediately following the Shabbat day meal and in order to show that Seudat Shelishit is a significant meal, one needs to eat a KeBaytzah, but in general if Seudat Shelishit was eaten as a separate meal, one only needs to eat a Kezayit for the meals of Shabbat.

* What's the halacha? S"A 291:1 codifies the Tur's statement that one should eat a Kebaytzeh for Seudat Shelishit. The [http://www.hebrewbooks.org/pdfpager.aspx?req=9150&st=&pgnum=142&hilite= Malbushei Yom Tov 291:1] in fact argues that he sees no reason that one be obligated to eat more than a Kezayit as the Gemara Shabbat 119b says that a Kezayit is sufficient for the Friday night meal. [The Sh"t Maharil (end of Siman 94) and Radvaz 1:489 seem to only require a Kezayit.] Eliyah Rabba 291:3 quotes this. See the Machasit HaShekel who answers the Malbushei Yom Tov's question from the Gemara Shabbat. The Mishna Brurah 291:2 quotes the Magen Avraham who says that one should eat more than a [[KeBaytzah]], however, some say one only needs a Kezayit and he concludes that preferably if one is able, one should be strict to have a Kebaytzeh. Shemirat Shabbat KeHilchata 54:20 agrees. Yalkut Yosef ([[Shabbat]] vol 1, p. 313) writes that for the Friday night meal and [[Shabbat]] day meal one needs to have a [[KeBaytzah]] of bread and if that’s difficult one may have a Kezayit of bread (and in such a case one should wash without a Bracha). </ref>However, if one only eats a Kezayit, according to many opinions one shouldn't say the Bracha of Al Netilat Yadayim when washing for the bread. <Ref>See [[Netilat_Yadayim_for_a_meal#Minimum_amount_of_bread_to_obligate_Netilat_Yadayim]].</ref>

# One should make sure to eat a Kezayit of the bread for the meals of Shabbat within Shiur Kedi Achilat Pras.<ref>Yalkut Yosef (Shabbat vol 1, p. 313) writes that one should eat a kezayit of bread for the meals of Shabbat within the time of Kedi Achilat Pras. </ref>