Suppose How to bake a chocolate cake<br>Start by preheating the oven to 350 degrees Fahrenheit. In a mixing bowl, combine flour, cocoa powder, sugar, and baking soda. In a separate bowl, mix together eggs, milk, and vanilla extract. Gradually add the wet ingredients to the dry ingredients, mixing until well combined. Pour the batter into a greased cake pan and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Can we infer that "Adding salt to the batter is optional."? Yes, no, or maybe?