With Koreans making up more than a quarter of the immigrants who live in Los Angeles’s Koreatown, that cultural flavor is palpable in the neighborhood’s remarkable concentration of late-night restaurants, bars and clubs. Thanks to the recent arrival of the Line Hotel in Koreatown — a design-minded homage to all things Korean, and to the street-cool sensibilities of K-town — a whole new audience is getting an introduction to city greats that have long been under the radar: croon-worthy karaoke joints, meticulously frothed cappuccinos, fiery grocery kimchi, some of the best Korean barbecue anywhere. A spate of new businesses (a speakeasy here, a microbrewery there) has only added to the area’s energetic night life.

LOCK & KEY

Fumble around the foyer of this signless spot and you may feel a bit foolish. But once you choose the right doorknob and gain entry to the speakeasy-themed bar, settle in for expert cocktails and eats from the street-food stall next door (Korean-inspired kalbi kebabs, Taiwanese-style fried chicken).

239 South Vermont Avenue; 213-389-5625; lockandkey.la

BEER BELLY

The name isn’t misleading: You will likely gain a few pounds with Beer Belly’s quadruple-decker grilled-cheese sandwich, pork belly chips and duck-fat fries, paired with an impressive list of artisanal brews — many, like Smog City’s Little Bo Pils, made right here in the greater Los Angeles area.