EMBASSY CHEF CHALLENGE: Small plates prepared by more than a dozen embassy chefs, as well as live and silent auctions. 6-9:30 p.m. $250. Ronald Reagan Building & International Trade Center, Woodrow Wilson Center, 1300 Pennsylvania Ave. NW. 202-661-7581. www.culturaltourismdc.org.
TEA SEMINAR: History of tea and tea treats, with a tasting. 6 p.m. $20. Dumbarton House, 2715 Q St. NW. 202-337-2288. www.dumbartonhouse.org.
COOKING CLASS: Covering modern French classics. 11 a.m.-2 p.m. $89. Open Kitchen, 7115 Leesburg Pike, Falls Church. 703-942-8148. www.openkitchen-dcmetro.com.
COOKING CLASS: Cookbook author Skiz Fernando leads a class on Sri Lankan rice and curry. 11 a.m.-2 p.m. $75. Hill Center at the Old Naval Hospital, 921 Pennsylvania Ave. SE. 202-549-4172. www.hillcenterdc.org.
COOKING CLASS: Dishes for a mostly vegetarian lunch. 10:30 a.m.-2 p.m. $60. Glenfiddich Farm Cookery, 17642 Canby Road, Leesburg. 703-431-9507. www.glenfarmcookery.com.
CRAWFISH BOIL: Crawfish and sides. 4 p.m.; repeats on May 24 and June 7, 4 p.m. From $12 a pound. Bayou Bakery, 1515 N. Courthouse Rd., Arlington. 703-243-2410. www.bayoubakeryva.com.
BOOK SIGNING: Blogger and cookbook author David Lebovitz signs and sells copies of his new book, “My Paris Kitchen: Recipes and Stories.” 11 a.m.-1 p.m. Free. Dupont Circle FreshFarm Market, 20th Street NW between Massachusetts and Connecticut avenues. 202-362-8889. www.freshfarmmarkets.org.
SPRING WINE FESTIVAL AND SUNSET TOUR: Samples from 16 Virginia wineries, plus wine-centric tours of the mansion. (May 16 and May 17 sessions are sold out.) 6-9 p.m. $38. Mount Vernon, 3200 Mount Vernon Memorial Hwy., Alexandria. 703-780-2000. www.mountvernon.org.
SUSTAINABLE SEAFOOD DINNER: Five courses featuring lionfish, wine pairings and a walk around the aquarium. 6-9 p.m. $99. National Aquarium in Baltimore, Pier 3, 501 E. Pratt St., Baltimore. 410-576-3800. www.aqua.org.
LAMB JAM: Fundraiser for D.C. Central Kitchen with a lamb cooking competition featuring local chefs. 6-9 p.m. $60. Eastern Market, 225 Seventh St. SE. dc.fansoflamb.com.
WINE DINNER: Five courses paired with Honor wines. 6:30 p.m. $100, not including tax and gratuity. Bazin’s on Church, 111 Church St. NW, Vienna. 703-255-7212. www.bazinsonchurch.com.
Event listings can be submitted online only at www.washingtonpost.com/gog/talk-to-us.html, at least 14 days in advance.