When being made at home, the recipe can consist of common ingredients, including flour, butter, white sugar, salt, vanilla extract, and eggs. Because the dough is not baked, no leavening agents, such as baking soda or baking powder are used. If cookie dough is intended to be used to bake cookies then baking soda or baking powder gets added to the dough. Chocolate chip cookie dough is a popular variation which can be made by adding chocolate chips to the mix.