Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9x5 inch loaf pan.
In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla. Combine the flour, cocoa, baking powder, and salt; stir into the creamed mixture alternately with the milk. Pour batter into prepared pan.
Bake for 50 to 55 minutes in the preheated oven, or until a toothpick inserted into the center of the cake comes out clean. Let cool in pan for 10 minutes, then turn out onto a wire rack and cool completely.
Interesting Facts
Chocolate pound cake is a classic cake recipe that has been around for centuries.
Eggs are a key ingredient in this cake. They help to add structure and moisture to the cake.
Cocoa powder is used to give the cake its chocolate flavor. You can also use melted chocolate if you prefer.