# It is improper to fast on [[Purim]] unless it is a fast for a nightmare. <ref> Rama 695:2 </ref>
==When should one eat Seudat Purim?==
# Many Ashkenazim have the minhag to eat the meal after [[mincha]] but they should be careful to have majority of the meal during the day, while many Sephardim have the minhag to eat the meal in the morning.<ref>
* Rama O.C. 695:2 writes that the minhag is to eat the meal after [[mincha]], but one should ensure that majority of the meal is eaten during the day. Rabbi Willig (“Practical Laws of Observance of [[Purim]]”, min 41-2) explained that the Rama means that the primary parts of the meal such as the bread, meat, and wine should be consumed during the day. Shalmei Todah (pg 317) also explains the Rama this way.
# The mitzvah of Seudat [[Purim]] is during the day and not the night, yet one should have simcha and a small meal at night (and make the meal of the day greater).<Ref>Shulchan Aruch and Rama 695:1, Mishna Brurah 695:3 </ref> If [[Purim]] falls out on Motzei [[Shabbat]] and Sunday, having [[Seudat Shelishit]] isn’t considered as having a small meal during the night of [[Purim]]. Rather, one should have a special meal for the sake of [[Purim]]. <Ref>Mishna Brurah 695:3 </ref>
# If one began the meal on [[Purim]] and ate past nightfall, one should still mention Al HaNissim in [[Birkat HaMazon]] <Ref>Shulchan Aruch and Rama 695:3. Or Letzion 4:60:4 writes that as long as one ate a kezayit by day even if the meal continued into the night one can recite Al Hanissim in Birchat Hamazon. Even though the Ben Ish Chai Shana Rishona Chukat 22 wrote that we don't mention Al Hanissim in Birchat Hamazon if it extended into the night, the Or Letzion writes that we follow Shulchan Aruch and Chida. He adds that this was the ruling of Rav Ezra Attiya. Yachava Daat 3:55, Yalkut Yosef (5764, Seudat Purim no. 5), Yalkut Yosef (Bet Yosef edition, 5776, p. 221 695:9), and Torat Hamoadim 11:5 agree. </ref> unless one already said [[Maariv]], in which case one shouldn’t say Al HaNissim. Some say that one can say it even after [[davening]] [[Maariv]]. <ref>Mishna Brurah 695:16 </ref>
# If purim falls on a Friday a person should have the meal in the morning<ref>Rama 695:2 writes that if Purim is on Friday one should have the meal before Chatzot in honor of Shabbat. Mishna Brurah 695:10, Or Letzion 4:60:1, Torat Hamoadim 11:6, and Yalkut Yosef (Bet Yosef edition, 5776, p. 220, 695:7) agree. Mishna Brurah 695:10 writes that after the fact one can still have the meal afterwards.</ref> but if he didn't he can have it after midday (Chatzot) until the beginning of the tenth halachic hour (which is a half hour before Mincha Ketana). After the fact if he didn't have it until the end of the day he should still have the meal then.<ref>Torat Hamoadim 11:6 adds that if one didn't have the meal before Chatzot one should do so before a half hour before Mincha Ketana and if one didn't do so one can still have the meal until the end of the day.</ref>
==What should one eat at Seudat Purim?==