Steak Au Poivre Du Diable

Name: Steak Au Poivre Du Diable
Ingredients: 2 boneless strip steaks (such as NY steaks); 1 tablespoon coarse, freshly-ground black peppercorns; 1/2 tablespoon ground coffee; 1/2 tablespoon unsweetened cocoa; 1 tablespoon ground chile pasilla molido (may substitute ground New Mexico chile); 1 teaspoon cayenne pepper; 1 teaspoon ground cumin; 1 teaspoon ground cinnamon; 1/4 teaspoon ground cloves; 1 teaspoon brown sugar; 2 tablespoons unsalted butter, separated into 1 tablespoon portions; 2 tablespoons olive oil; 1/4 cup cognac; 1/2 cup heavy cream; 2 jalape?o or large serrano chiles; Sea salt