A bag of flour is a common kitchen staple used in baking and cooking. It typically contains finely ground grains, most often wheat, which is processed to create a powdery substance. Flour is essential for making various foods, including bread, cakes, and pastries. Flour is sold in different types, such as all-purpose flour, whole wheat flour, and cake flour, each serving specific culinary purposes. The packaging usually indicates the weight, often ranging from 1 to 5 pounds, and may include information on nutritional content and storage recommendations.