Cookie dough is a mixture of ingredients used to make cookies, typically consisting of flour, sugar, butter, eggs, and flavorings like vanilla. It can be enjoyed raw or baked, with many people loving the taste of the uncooked dough. There are various types of cookie dough, including chocolate chip, oatmeal raisin, and sugar cookie dough. While eating raw cookie dough is popular, it is important to note that it may contain raw eggs and flour, which can pose health risks if consumed uncooked.