A year-round outdoor crab shack and bar is coming to D.C.’s U Street corridor later this year. “If it’s got a shell, there’s a good chance it’ll be on the menu,” said Duke’s partner Daniel Kramer.

Double-stacked “proper burgers” and seven-hour happy hours arrive in Foggy Bottom with the Thursday opening of Duke’s Grocery. The third location of restaurateur Daniel Kramer’s gastropub—bigger than ...