==What should one eat at Seudat Purim?==
# Many poskim hold that one should eat bread and meat in the meal.<ref>
* Rambam Megillah 2:15 writes that the meal should consist of meat and wine. The Magen Avraham 696:15 questions the need for meat. Nonetheless, many poskim including Kaf HaChaim 695:6, Chazon Ovadyah pg 173, and
Nitai Gavriel 71:3 agree that one should have meat. Shaar HaTzion 695:12 implies it’s an obligation. Kovetz MeBet Levi (5758, vol 13, pg 32) writes that having meat is not MeAkev.* The Birkei Yosef 695:1-3 and Magen Avraham 695:9 write that there’s no obligation to eat bread. However, Aruch HaShulchan 695:7, 12 argues that mishteh is defined by bread. Chayei Adam 155:30 says the same. Nitai Gavriel 71:1 and Yalkut Yosef 695:4 write that one should be strict to have bread. Mishna Brurah makes no mention of it except in Shaar HaTzion 695:4 where he leaves it as a dispute. </ref>
==If one forgot Al HaNissim==
# If one forgot Al HaNissim in Benching, one doesn’t repeat benching. However, if one remembers that he forgot Al HaNissim while still benching one should add it in the Harachaman’s by saying Harachaman Hu Yaaseh Lanu Nissim and continue with Al HaNissim. <Ref>Mishna Brurah 695:15 </ref>
# The mitzvah to drink only applies to wine. Although most Rishonim seem to require one to reach a level of drunkenness <Ref> Gemara Megillah 7b. Rambam (Laws of Megillah 2:15), Rif Megillah 3a in Dapei HaRif, Rosh Megillah Perek 1 Siman 8, Tur Orach Chayim 695:1 seem to require one to reach a level of drunkenness.</ref>, most later authorities, Ashkenazic and Sephardic, hold that one should only drink a little more than what one is accustomed to drink and then sleep (see note for procedure). <Ref> The Bet Yosef 695:1 quotes the Orchot Chaim who writes that it’s forbidden to get drunk; rather the mitzvah is to drink a little more than one is accustomed to drink. Darkei Moshe HaAruch 695:2 quotes the Mahariv as saying that one should drink, and then sleep so that one doesn’t know the difference between Arur Haman and Baruch Mordechai. Rama 695:2 combines the Orchot Chaim and Mahariv saying that one should drink more than one is accustomed to drink and then sleep.
* Mishna Brurah 695:5 explicitly rules that this is the accepted halacha. This was also the minhag of Rav Shlomo Zalman (Halichot Shlomo pg 343 note 78). [http://www.yutorah.org/lectures/lecture.cfm/753214/Rabbi_Hershel_Schachter/Inyanei_Purim Rav Hershel Schachter in a shiur on yutorah.org] (“Inyanei Purim”, min 81-83) explained that one should drink a little more than one is accustomed to, and then fall asleep after the meal. Rabbi Willig (min 42-6), however, explained that according to the Rama one should drink a little, sleep, and then have the Seudah, and drink a little in the meal. Yalkut Yosef 695:14 rules like the Orchot Chaim and makes no mention of sleeping. Rav Mordechai Eliyahu in MaAmer Mordechai 64:36 who seems to agree.
* Rashi Megillah 7b D”H LeIvsumei and Rambam 2:15 specify wine and not other intoxicating drinks. Kaf HaChaim 695:6 and
Nitai Gavriel 73:2 codify this as halacha. Rabbi Willig (min 44-5) rules that it’s prohibited to have intoxicating drinks other than wine on Purim or any day of the year. However, Shalmei Todah (pg 326) quotes Rav Nissim Karlitz saying that it’s not MeAkev to have wine specifically. Rav Shlomo Zalman (Halichot Shlomo pg 342, note 76) writes that grape juice does not suffice. </ref> All agree that if one going to end up violating or degrading any halacha such as Birkat HaMazon, one should not get drunk. <Ref> The Chaye Adam 155:30 writes that if one knows that getting drunk will cause one to degrade fulfilling a mitzvah such as making Brachot, Birkat HaMazon, or Maariv, one shouldn’t get drunk. This is quoted by the Biur Halacha D”H Ad and Kaf HaChaim 695:17. This is supported by the Mieri (Megillah 7b) who writes that we’re not commanded to have happiness of vanity and frivolity, rather one should have happiness that leads to Ahavat Hashem and a desire to thank Him for the miracles he did for us. </ref>
# If one’s parent tells one not to drink on purim one should listen to them and only drink a little more than usual. <Ref> Halichot Shlomo 19:25 </ref>
# Women are not required to drink as much. One cup or less is sufficient. <ref> Sh"t Rivevot Ephraim 1:458, Moadim Uzmanim 2:190 </ref>