Photo by Jordan Barab.

DUMPLINGS: Tonight’s Chinito’s Kitchen dumplings class is now sold out, but there is another opportunity for you to learn how to prepare hand-rolled dumplings next Wednesday, so we are going to suggest you buy those tickets ASAP. (635 Florida Avenue NE) 7-9 p.m. $25

SHOPPING: The District Sample Sale is Here. Shop designer brands at up to 90 percent off, get your hair blown out, your nails polished, and enjoy cocktails and hors d’oeuvres from 12 area restaurants. Long View Gallery (1234 9th Street NW) 5:30-9 p.m. $40-500

STEREOPHONICS: The Goethe-Institut Washington presents “Hear Now! Birth of Stereophonic Recording and Berlin’s Haus des Rundfunks,” a lecture detailing how three competing German recording companies cooperated to fundamentally change the way music is recorded and produced. Goethe-Institut Washington (812 7th Street NW) 7-8:30 p.m. Free

COCKTAILS: Witness the birth of D.C.’s Official Svedka Cocktail as four contestants use Svedka’s “super secret” new flavor and four mystery ingredients to craft a cocktail. First 30 people get free drink tickets. The Manor (1327 Connecticut Avenue NW) 6-8 p.m. Free