הלכה על מגילה 1:10

Rashi (Megillah 7b s.v. Livsomei) and the Rambam (Hil. Megillah 2:15) describe the obligation to drink on Purim specifically as drinking wine.¹⁰See Rashi to Megillah 7b and Korban Netaneil (Megillah 1:10), who also seem to assert that one fulfills this rule only by drinking wine. See this author's essay in Beit Yitzchak (26:595-596) for an explanation of the significance of specifically requiring wine. In fact, the Aruch Hashulchan (O.C. 695:5) specifically warns against drinking liquor, because it causes one to vomit.