From Black Book Magazine:
There are some mysteries that keep important people up at night, like how to fix the euro crisis and whether global warming is reversible. The rest of us worry about far smaller things, such as the Frasier theme song, because what the hell were they ever singing about? The familiar “tossed salads and scrambled eggs” refrain had little to do with the show’s subject matter of psychiatry and neurotic families, but according to composer Bruce Miller, that’s the way the studio wanted it. Tossed salads and scrambled eggs are mixed up, you see, just like Frasier’s patients. It makes perfect sense!
Former Frasier writer Ken Levine was asked on his blog about the meaning of the song, so he tracked down Miller for an answer. Here’s an excerpt:
I was told they wanted something pretty eclectic and jazzy, but to avoid any direct references to specific subject matter. So it was necessary to stay away from words about psychiatry, radio shows, the name “Frasier”, and anything else directly indicating aspects of the show.
I immediately wrote the song/music itself, but then needed a lyric that would work, so I called my friend Darryl Phinnesse who is really talented and really smart. I gave him the idea of the show and he called back with the idea of “Tossed Salads and Scrambled Eggs”. At first I was a bit baffled myself until he explained that these were things that were “mixed up”….like Frasier Crane’s patients. Once we agreed on this premise (by the time I fully understood it), we went into completing the song.