This past week I got a Mac laptop to use for my day job. Needless to say, I took some time to get Gourmet up and running on it. I doubt I'll have the energy to package this and everything, but this is at least a proof-of-concept, and it will let me fix bugs affecting OSX easily (which will get Gourmet ready to be packaged, should someone else want to step in and do the last bit of work).

Here are instructions:
http://grecipe-manager.wiki.sourceforge.net/Mac+Installation

Tom