If you really want to be precise, you can use a sifter with a specific mesh number, which denotes how fine it will sift your flour. The higher the mesh number, the finer it will be. I simply use a ...
Once that's done, use a spoon or scoop to fill the cup with ... and avoid anything that packs it down. hands holding a flour sifter over a bowl - Amazon If you've been baking for a long time ...