Flour

Flour:
If you walk into your local Safeway or other supermarket and head over to the aisle for baking, you may come upon six, seven, maybe even eight different types of flour. With so many options, which one do you choose?
Do you purchase the flour with the prettiest design on the box or the cheapest per-pound value? Is the brand of the flour important?

The answer lies in what is your baked good destination. Most supermarkets in the United States carry at least three types of flour on stock: all-purpose flour, bread flour, and cake flour.

The all-purpose (as its name would hint) is by far the most popular and versatile of the three major varieties. If I were to choose one type of flour to store in my pantry, I would always keep all-purpose (AP) flour on hand.

At its most basic, what differentiates the flours is protein content.
Approximately seventy-five percent of the wheat grown in the United States is hard wheat (that is, wheat that is high in protein). Most flours composed of hard wheat are marketed as bread flour. The high protein is needed to form the plastic and elastic structure demanded by crusty baguettes and chew sourdough breads.

On the contrary, soft wheat is that which yields lower levels of protein. Flours composed mostly of milled soft wheat are sold as cake flour. The lower protein content reduces the amount of elastic framework formed by hardier bread flours. This reduced protein is best suited to delicate baked goods such as light, airy biscuits, pastries, and (as the name suggests) cakes.

All-purpose (AP) flour is usually a mixture of soft and hard flours, which is why it is apt and versatile in the kitchen.

Less common flour includes self-rising flour. For the most part, self-rising flour is AP flour that has been laced with chemical leavening. This additional lift is best when working with dough that requires chemical leavening (usually baking powder) so that there is already carbon dioxide gas bubbles at work before the dough is completely formed.

Bleached or Unbleached:
You may also see several different variations of unbleached flours. They are identical to the flour of its original counterpart; except unbleached flour is void of the additional flour bleaching agents added to flour in order to make it appear whiter. Initially, when flour is processed at the mill it is slightly yellow in color. Most of the time flour is treated with calcium peroxide (CaO2), nitrogen dioxide (NO2), chlorine (Cl2), or chlorine dioxide (ClO2­). Albeit this chemical nomenclature appears complex and dangerous, do not be frightened. These chemicals are added in small proportions and only used to whiten the flour.

So why not purchased unbleached flour to avoid the chemicals in its entirety? It would probably be safer to consume products made by them. I see no reason the flour needs to appear white.

Ehh, it may not be the best approach to purchase unbleached flour solely for the absence of chemicals. Consider the final aesthetics of the baked good. Using the unbleached yellow-tinted flour can make yellow-tinted “white” bread. The United States Food and Drug Administration (FDA) have strict regulations that govern the addition and application of chemicals to food products intended for human consumption. These laws permit only certain bleaching agents are used in precise quantitative amounts.

In the end, the choice of flour to use in your products greatly depends on the qualities sought to yield the proper processes needed to arrive at your final destination.