<human>:  How do I make a chocolate cake?
<bot>: To make a chocolate cake, you will need the following ingredients: all-purpose flour, cocoa powder, baking soda, baking powder, salt, unsalted butter, sugar, eggs, vanilla extract, and milk. Preheat your oven to 350 degrees F (175 degrees C). Grease and flour a 9x13 inch cake pan. In a large bowl, whisk together the flour, cocoa, baking soda, baking powder, and salt. In a separate bowl, cream together the butter and sugar until light and fluffy. Add eggs one at a time, beating well after each addition, then stir in the vanilla. Alternately add the dry ingredients and the milk to the butter mixture, beating well after each addition. Pour the batter into the prepared pan. Bake for 35 minutes, or until a toothpick inserted into the center of the cake comes out clean. Enjoy!