I have been using this philosophy with my writing. Now, I am no means a pro, nor do I even deem my work close to scrutinization yet, but I do enjoy seeing where time takes me and the story that is itching to get out.
One of the very first scenes I wrote in my story has been completed and sits in a file on my computer, and hasn't been looked at for some time. It is neither the beginning or the end of the story, so there is still much work to be done to get to this point and to find culmination of my idea. Some of the scenes are outlined, and others are still in the yet to be discovered phase. Back to the first scene though. I still think about it. I still picture it in my mind as I think of the overall arc of my story. It is still simmering.
What does it mean to simmer something? Well, to cook something slowly, letting the flavors burst from the various ingredients to meld together into something wholly spectacular by itself. If ever you have had crock pot soup, you know exactly what I mean. A favorite of mine is homemade chicken soup. I throw whatever veggies I have on hand into the pot, chicken, and stock. Delicious! The flavors become one and a new creation is born.
I opened up the file of my first scene and realized that I had been simmering for quite a while. New ideas have opened up and new directions are forged. I can't wait to see what simmering for quite a while will do!