This chocolate marble pound cake recipe is perfect for chocolate lovers. The recipe uses cocoa powder and chocolate chips to create a rich chocolate flavor. The cake is moist and tender with a beautiful swirl of chocolate and vanilla. It's perfect for any occasion and can be served as a dessert or with a cup of coffee or tea. The recipe uses simple ingredients like flour, sugar, eggs, butter, and milk. The cake is baked in a loaf pan and can be stored in an airtight container for up to 3 days.