Dear Faldage: I think "Soo Long" was a variety of Chinese tea.

A dimly remembered lyric, which I can't find on google. Can anyone help? Titled "Teapot's a-Whistlin', Darling", I think.

Oolong, souchong -- so long!
You take a lump or too?
Catnip; sassafras; acapulco peppermint;
Let me tell it to you:
Teapot's a-whistling, darling,
But I'm feeling blue.
You went and got my steam up,
And now I'm sitting on the fire for you.