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Each wheat kernel consists of:
Patent flour comes from the center of the endosperm. It has the highest quality and the lowest amount of ash (minerals). Clear or cutoff flour comes from the endosperm after patent flour has been extracted. Its relatively high protein and ash contents exhibit in its dark color compared to patent flour. Whole wheat or graham flour comes from the whole kernel (bran, germ, endosperm). Doctor Sylvester Graham developed this flour in the early nineteenth century to promote unrefined foods and vegetarianism. Whole wheat flour is high in proteins (11 - 14%), but its ability to form gluten is weak compared to white flour because:
Glutenin and gliadin are the two proteins that can form gluten. Gluten is basically a network of proteins that is both elastic and plastic. It has the ability to stretch into a very thin film without tearing, and spring back into its original form.
This protein network traps air, steam, carbon dioxide to leaven cookie dough during the baking process. Protein content in flour varies from 6% to 14.5% depending on the types of wheat. Cake flour has the least amount of protein (6-8%). Bread flour is at the high end and all purpose flour comes in the middle with 9.5 - 11.5%. There are six known varieties of wheat: hard red spring, hard red winter, soft red winter, hard white winter, soft white winter, and durum wheat. "Red" and "white" refer to the color of the kernel. Winter wheat is planted in the Fall and harvested in early Summer. Spring wheat is planted in the Spring and harvested in late Summer. The planting schedule for durum wheat is similar to that for hard red spring wheat. Durum wheat is milled into semolina to manufacture pasta products. Keep wheat flour in a clean, well-ventilated area with a temperature between 75-80 degrees Fahrenheit and a relative humidity between 55-65%. Whole wheat flour has shorter shelf life due to its higher fat content. Generally, soft wheat flour imparts tenderness to homemade and no bake cookies. Another ingredient that contributes to this quality is right here.
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