In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
In a large bowl, blend together sugar and oil using a handheld electric mixer. Stir in cocoa powder. Using the mixer, beat in eggs, vanilla, extracts, and coffee mixture.
Fold in flour mixture, 1/3 cup at a time, until combined. Cover dough and refrigerate overnight.
The following day, preheat oven to 350 degrees and line baking sheets with parchment paper. Place powdered sugar in a shallow bowl and set aside.
Remove cookie dough from the refrigerator and shape into 1" balls. Roll each ball in powdered sugar and place on prepared baking sheets, allowing at least 2" in between.
Bake for approximately 10-12 minutes, until cookies are just set on the bottom but still appear slightly undercooked. Remove from oven and allow to cool for a few minutes on the baking sheet before transferring to wire rack to cool completely.