The title is a quote from Carl Sagan [1], and yes, he's using the exteme definition of “scratch.”
But even using a less rigorous definition of the word “scratch” can still require a bit of work, just as this BLT (Bacon, Lettuce, tomato sandwich) [2] that Jared Dunnohew made [3] (link via Michael Ruhlman [4] via Jason Kottke [5]). Not only did he grow his own tomatoes and lettuce, baked the bread, made the mayonnaise, but smoked his own bacon and even harvested his own salt!
He must really like his BLT (Bacon, lettuce and tomato sandwich) fresh …
[1] http://www.youtube.com/watch?v=zSgiXGELjbc
[2] http://onehungrychef.freewebhostx.com/blt/
[3] http://onehungrychef.blogspot.com/2009/08/on-going-overboard.html
[4] http://blog.ruhlman.com/ruhlmancom/2009/09/blt-from-scratch-the-winners.html