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....
Apprendre une langue, c'est faire un voyage différent chaque jour.
from Fle pour les curieux