Description
Chocolate chip cookies are commonly made with white sugar; brown sugar; flour; salt; eggs; a leavening agent such as baking soda; a fat, typically butter or shortening; vanilla extract; and chocolate pieces. Some recipes also include milk or nuts (such as chopped walnuts) in the dough.
Depending on the ratio of ingredients and mixing and cooking times, some recipes produce a soft, chewy cookie while others will produce a crunchy, crispy cookie. 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.
The texture of a chocolate chip cookie is largely dependent on its fat composition and the type of fat used. A study done by Kansas State University showed that carbohydrate-based fat substitutes tend to bind more water, leaving less water available to aid in the spread of the cookie while baking and resulting in softer, cakelike cookies with less spread.
