I love baking. I bake every chance I get. I love baking cakes, cookies, cookie cakes, brownies, pies, muffins. It doesn't matter what it is, I just love doing it. Every time I try to make home made brownies, they don't always turn out the way I want them to. They either taste like rubber (that experience was so embarrassing), or they come out more cakey than I desire. I want to know what the purpose is for the most common baking ingredients. Specifically: Flour Sugar Baking soda Corn Starch (for powdered sugar) Maple Syrup (for brown sugar) Eggs Butter (and oil, if it makes a difference) From experience, this is what I believe each ingredient's purpose to be Sugar - sweetener Baking soda - makes the dough rise Eggs - make the dough more cakey Corn starch - thickener other than the ones listed above, I have no idea whatsoever what the purpose is for. If Im wrong about any above, then please correct me. Thanks, as answering these questions will help me become a better cook.