Grind the cumin and coriander finely with a mortar and pestle or in a spice grinder.

NPR: Recipes: 'Screen Doors and Sweet Tea'

Though, apart from the exposed brick, mortar and pestle used to grind pigments, and an easel with Cole's doodles etched into it, much of the contents aren't original to the studio.

WSJ: Hudson River Schooling