AFAIK, it means what Wooly says and also what Norman says in the context of the meal!
Gemonimo uses it quite a lot and I picked it up from her. Usually, when I use it, I mean, all the same, nonetheless, even so, despite all that, etc. Really to emphasise an opinion about something.....no, I don't mean emphasis in a narrow sense but in a sense of agreeing with what you have just said.
Perhaps Gem will come on and tell me whether I've got her meaning right....
N'allez pas trop vite - Proust