<human>: How can I make a good chocolate cake?
<bot>: To make a great chocolate cake, you will need the following ingredients: 1 cup of all-purpose flour, ¾ cup of cocoa powder, ½ teaspoon baking soda, ¼ teaspoon of salt, 1 cup of butter, 2 cups of sugar, 3 eggs, 1 teaspoon vanilla extract. Preheat your oven to 350 degrees Fahrenheit (177 degrees Celsius). Grease and flour a 9x13 inch pan. In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt; set aside. In a large bowl, cream together the butter and sugar until light and fluffy. Add in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract. Gradually mix in the dry ingredients and stir until just blended. Pour batter into prepared pan. Bake for 30–35 minutes or until a toothpick inserted into the center comes out clean. Allow the cake to cool before serving. Enjoy!