Preparation. Step 1. Whisk baking powder, 2½ cups flour, and 1½ tsp. salt in a medium bowl to combine. Pulse mint and granulated sugar in a food processor until mint is finely chopped.

Behind a curved partition at the entrance of the exhibition “Adam Pendleton: Love, Queen” at the Smithsonian’s Hirshhorn Museum and Sculpture Garden, a single-channel video plays.