Noun. Substance applied to food to increase spice, to make more intense. If describe as figuratively applying to an item, referenced item would increase in intensity, pace, speed or importance.
An inspiring piece--a song, a beautiful bird, a handsome fellow, a smooth & delicious glass of scotch....
I was creatively stuck, but I heard Boney M. for the first time & suddenly, I wrote like I'd never written before. It was truly a divine shot of thought sauce.