From a songwriting perspective, how did the line "Try the grey stuff, it's delicious!" end up in the song Be our Guest from Beauty and the Beast? It's hard to think of a food that's both grey and delicious, and tons of other things would scan (gravy? pastry? green stuff?) How did they get to "grey stuff"? Was it a first draft, or did they make a deliberate choice to use it other than alternatives?