Are you ready to write the ingredients? Here they are: two eggs, one cup of sugar, one cup of flour, six tablespoons of cocoa powder, two teaspoons of baking powder, two cups of salt, two teaspoons of vanilla, two thirds cup of milk, two thirds cup of butter and some chocolate chips. You know the steps. First, beat the eggs with sugar. Next, add flour, cocoa powder, baking powder, vanilla and milk. Then, add the melted butter and chocolate chips. Mix all the ingredients. Finally, bake at 180 °C for 30 minutes, but don't forget to preheat the oven. Bon appetite.
Which item is not in the ingredients list?