Wheat flour is the most important ingredient in home baking and is the basic ingredient for almost every commercially baked product and pasta. Of the grains available for the production of flour, wheat is unique. It is the only cereal grain with sufficient gluten content to make a loaf of bread without being mixed with another grain. Wheat is also the most widely distributed cereal grain. It is grown all over the world. In most instances, a reference to 'flour" is a reference to wheat flour.