Stay Up Learning All Night Long!

R. Hezekiah de Silva in Pri Chadash to Shulchan Aruch, Orach Chayyim 89:3, writes that in Egypt "one cannot attain presence of mind without the aid of coffee."

R. Avraham ben Mordechai haLevi of Cairo also notes that it was an everyday practice at sizable meals that after drinking a glass of wine at the conclusion of bentching, "another beverage called coffee" would be brought in order to restore one's presence of mind.

Is it just me, or does haLevi sounds like he's describing a wine/caffeine speedball?