Bleached All-Purpose Flour: What is it? A combination of hard and soft wheat, Pillsbury Best All-Purpose Flour is suitable for a variety of applications. Bleaching flour enhances its color and baking capabilities. The nutritional content of the flour is unaffected by this treatment. Cups per Pound of Flour: How Many? One pound of flour contains around 3-1/2 cups of flour. Package details will come in handy when getting in touch with us. Go to pillsburybaking.com to see us. One quarter cup has 110 calories.