Depending on the ratio of ingredients and mixing and cooking times, some recipes are optimized to produce a softer, chewy style cookie while others will produce a crunchy/crispy style. Regardless of ingredients, the procedure for making the cookie is fairly consistent in all recipes: First, the sugars and fat are creamed, usually with a wooden spoon or electric mixer. Next, the eggs and vanilla extract are added followed by the flour and leavening agent. Depending on the additional flavoring, its addition to the mix will be determined by the type used: peanut butter will be added with the wet ingredients while cocoa powder would be added with the dry ingredients. The titular ingredient, chocolate chips, as well as nuts are typically mixed in towards the end of the process to minimize breakage, just before the cookies are scooped and positioned on a cookie sheet. Most cookie dough is baked, although some eat the dough as is, or use it as an addition to vanilla ice cream to make chocolate chip cookie dough ice cream.