Front Burner Concepts
Develops out of an Elevator Pitch.
Now you decide which idea you want to develop into a plot. My own practice is to go through my lists periodically and sense which ones jump out at me. Get me wondering. Have me seeing a potential story.
I put these into a file I call “Front Burner Concepts.” I’ll then spend half an hour typing a free-form document, talking to myself about the idea. I’ll put down potential plot twists, stakes, characters, motivations. A story will begin to take shape.
Source: How to Write Pulp Fiction - James Scott Bell