Dark Chocolate! The shell is dark cocoa with traditional cocoa and marshmallows on the inside, once sealed the item is drizzled with seasonal melt and seasonal sprinkles. This is a 6-8oz Cocoa Bomb with a decadent flavor. Place the Cocoa Bomb in the mug, warm milk until steaming hot, pour steaming milk over the Cocoa Bomb, wait 15-30 seconds as the milk begins to melt the seams and/or top of the cocoa bomb to produce an "explosion" of cocoa powder and marshmallows.