I have so many recipes that I like to use, but they are all scattered throughout many different cookbooks. So, to be sure that I never lose the recipe by forgetting which book it is in, I have coil bound note book that I write my favorites in. This way I know exactly where to look. And if a recipe makes its way into the notebook, then it is a keeper for sure.
Okay, so that wasn't rocket science but, it Works For Me ! :o)