Quality Pledge: Flour is the most important ingredient in home baking. Pillsbury strives to provide you with the highest quality flour you can buy. Glad You Asked! What is Bleached All Purpose Flour? Pillsbury Best All Purpose Flour is a blend of hard and soft wheat appropriate for all uses. Flour is bleached to improve baking performance. This process does not affect the nutritional value of the flour. What is the best way to store All Purpose Flour? Store flour in an airtight container in a cool place (75 degrees F or cooler) away from heat. For maximum shelf life, flour may be stored in refrigerator or freezer. If stored correctly, flour will stay fresh up to 2 years. If my recipe calls for sifting, do I need to sift? Not Pillsbury Best all purpose flour is sifted over 100 times. It is appropriate for all recipes whether they call for sifted flour or not. What flours can I substitute with All Purpose Flour? All Purpose and unbleached all purpose flour can be used interchangeably. If the recipe calls for self rising flour, simply add 1-1/2 teaspoons baking powder and 1/2 teaspoon salt for every cup of All Purpose Flour substituted in the recipe. How many cups per pound of flour? There are about 4 cups of flour in 1 pound.