<human>:  What's the best way to bake a perfect chocolate cake?
<bot>: Preheat the oven to 350F (180C).2 Grease and flour a 9-inch (23 cm) round baking pan.3 In a medium bowl, whisk together the flour, cocoa powder, baking soda and salt.4 In a large bowl, cream together the butter, sugar, and vanilla extract until light and fluffy.5 Beat in the eggs one at a time, then stir in the cooled melted chocolate.6 Gradually beat in the dry ingredients, alternating with the milk until all is combined.7 Pour the batter into the prepared pan and bake for roughly 30 minutes.8 Test to see if the cake is done by inserting a toothpick into the center, if it comes out clean the cake is done.9 Allow the cake to cool for a few minutes before inverting onto a plate.10 Enjoy your perfect chocolate cake!