Regular cookie dough (that is going to be baked into cookies) contains two possibly dangerous ingredients. Most people already know that eating raw eggs, which are commonly found in cookie dough, can make you sick. If we don't want to cook the dough, and instead eat it raw, we can simply leave the eggs out to omit this risk. The other ingredient in question is the flour. In recent years, flour has regularly found to be contaminated with E. coli bacteria that can make you very ill. Consequently, it is recommended to make sure flour has been cooked or heated before eating. So if we're making cookie dough to eat raw, we can either use a safer flour (like the oat flour I used to make Edible Chocolate Chip Cookie Dough), or we can heat up the flour to kill any potential bacteria. Also, since this dough is never going to be cooked, there are no leaveners like baking soda or baking powder added, because they would be unnecessary.