Preheat the oven to 176.7°C (350 F). Meanwhile, line and grease one (1) 12x16 inch square pan with baking/wax paper. Set aside.
In a bowl, combine cake mix, eggs, Cerveza Negra, and oil. Mix until smooth and pour into the prepared pan.
Bake for 25 minutes. Let cool and then crumble cake and form into 1-inch balls.
Prepare dark chocolate by melting it for 10-15 seconds in a microwave oven over a high setting.
Dip each ball in melted dark chocolate and then roll each ball in pistachio nuts, cocoa powder, or desiccated coconut. Drizzle with some melted white chocolate placed in a piping bag, if desired.
Notes
Yield: 40 pc (30 grams per ball) /4 pc per serving