The primary ingredient in a traditional chocolate chip cookie is flour. Flour provides the structure to the cookie, creating a base that combines with other ingredients to achieve its classic chewy or crispy texture. Typically, all-purpose flour is used in recipes for chocolate chip cookies, along with butter, sugars, eggs, chocolate chips, and baking soda. The balance of these ingredients results in the beloved flavor and texture found in chocolate chip cookies. They are a popular treat enjoyed warm or at room temperature across various settings and occasions.