1 tablespoon whole white peppercorns
1 tablespoon whole coriander
4 ½ tablespoons ground cinnamon
2 teaspoons ground nutmeg
1 teaspoon ground cloves
3 ½ tablespoons unsweetened cocoa
4 tablespoons sea salt, preferably gray
2 (2-pound) boneless pork tenderloins
2 tablespoons extra-virgin olive oil
Preheat oven to 400 degrees
In a medium saucepan over medium heat, toast white peppercorns and coriander seeds until they begin to pop. Remove from heat and grind to fine powder in a coffer grinder (for spices). Mix the ground pepper and coriander with remaining spices, cocoa and salt.
Trim the pork tenderloins of fat and silver skin. Rub with a generous amount of the cocoa spice rub. Heat the olive oil in a large sauté pan over medium high heat until hot but not smoking. Sear each tenderloin on all sides until a rich brown color, about 2 minutes each side. Remove tenderloins from heat and finish in the oven for about 10 minutes or until cooked through.
Let the tenderloins rest out of the oven for at least 10 minutes before carving.