Position a rack in the center of the oven and preheat to 325 degrees . Butter a 10-inch springform pan, dust with 2 tablespoons cocoa powder and place on a baking sheet.
In a saucepan, whisk together the coffee, whiskey, butter and 3/4 cup cocoa powder over low heat. Whisk in the granulated and brown sugars. Let cool. In a small bowl, toss the chocolate chips with 1 tablespoon cocoa powder.
In a bowl, combine the flour, baking soda, salt, pepper and cloves. Whisk the eggs, egg white and vanilla into the cooled coffee-chocolate mixture. Whisk in the flour mixture. Fold the cocoa-dusted chocolate chips into the batter.
Pour the batter into the prepared pan and bake until a toothpick comes out just slightly moist, about 1 hour. Let cool. Dust with the remaining 1 tablespoon cocoa powder before serving.
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