Preheat oven to 350 degrees F. Line a cupcake pan with cupcake liners.
In a large bowl whisk your dry ingredients together (cocoa powder, flour, baking soda/powder, and salt) just until combined. Set aside.
In a separate bowl mix sugars, eggs, oil, and vanilla, and buttermilk. Gradually add dry ingredients. Stir until just combined.
Ladle batter into lined pan (fill around 1/2 way full). Bake for 18-20 minutes or until a tooth pick comes out clean.
Melt butter and chocolate in the microwave for 2-3 minutes (stirring frequently).
Once melted add vanilla and milk. Gradually stir in powdered sugar.
Spread frosting on cupcakes. Dust with sugar. Draw horizontal lines using the decorating gel.
Top with 2-3 hot tamales. Draw additional grill marks if desired.