La Mar Cebicheria Peruana's Pisco Sour (Pisco Quebranta, lime juice, simple syrup, egg white, and regional bitters) has felled us on more than one occasion. Though Pisco is a brandy (i.e., distilled from grapes), the foamy egg white fills us with nostalgia for (don't judge) the Orange Julius. We always seem to sip the foam way too quickly, watching the little orange dash of bitters placed carefully in the center collapse into a formless mass at the bottom of the glass. Be careful: It's a recipe for wobbly walking. The restaurant is offering them for $5 on Feb. 4-5 in honor of the practically official Peruvian holiday, Pisco Sour Day, on Feb. 5.
La Mar Cebicheria Peruana: Embarcadero at Pier 1 1/2, 397-8880.