The most accurate way to measure flour is with a digital scale. It removes the guesswork and will help you achieve consistent baking results. All of our recipes assume 1 cup = 120g (or 4.25 oz.) of flour.
If you do not have have a digital scale our "Fluff, Sprinkle, and Scrape" technique shown in the video is the best way to make sure you do not add too much flour to your recipes.