Suppose How to bake a chocolate cake<br>Preheat the oven to 350°F. Grease and flour a 9x13 inch pan. In a large bowl, cream together the butter and sugar until smooth. Beat in the eggs, one at a time, then stir in the vanilla. Combine flour, cocoa, baking soda, and salt; gradually mix into the creamed mixture. Pour into the prepared pan.
Can we infer that "Adding salt is not necessary in baking a chocolate cake"? Yes, no, or maybe?