Add baking soda to cookies, because baking soda is crisp and functional. On the contrary, baking powder plays a fluffy role. Remember not to put too much baking soda. Too much baking soda will make you feel rustling.

Cookies:

Cookies are foods made of cereal flour (and/or potato flour) with or without sugar, grease and other raw materials, and processed by flour mixing (or pulp mixing), molding, baking (or frying), and foods with cream, protein, cocoa and chocolate added between products (or on the surface or inside) before or after cooking.