Strip Steaks with Coffee Cumin Rub

boneless New York strip steaks, each 11⁄4 to 11⁄2 in. thick and 12 to 14 oz., fat and silverskin trimmed

ground dark-roast coffee

¼ tsp ground cumin

½ tsp kosher salt, divided

½ tsp freshly ground pepper, divided

extra-virgin olive oil

Black Lager Demi-Glace (see recipe)