Whisk together flour, baking powder, salt and (optional) coffee. Set aside.
2
Beat together cocoa powder, granulated sugar, and oil until it comes together in a black, sticky, gritty sort of dough.
3
Add eggs, one at a time to cocoa mixture, mixing for about 30 seconds each. Add the vanilla and beat thoroughly.
4
Beat the dry ingredients into the cocoa/egg mixture. Do not overmix.
5
Cover and chill for at least four hours, preferably overnight.
6
Preheat oven to 350" and line two baking sheets with parchment. Place the confectioners sugar in a wide bowl.
7
Use a small scoop or rounded teaspoon to get clumps of the chilled dough and roll into 1" balls.
Roll the balls in the confectioners sugar and place on baking sheets(12-16 per sheet).
8
Bake at 350''''for 10 - 12 minutes. Allow to cool for a minute or two before transferring to a wire rack to cool completely.
