Grain-based flours are made by grinding various grains into a fine powder. Common grains used include wheat, corn, rice, and oats. Each type of flour has unique properties, making them suitable for different recipes. For example, all-purpose flour is versatile and often used in baking, while whole wheat flour offers more fiber and nutrients. These flours can be used to create a wide range of foods, from bread and pasta to cakes and cookies. Additionally, there are gluten-free options, such as almond flour and coconut flour, which cater to those with dietary restrictions.