CGI Syrup?

In that scene where Chris Messina is giving that monologue in the diner about love, and he pours syrup on the "home" he makes, is that syrup CGI? It kind of looks like it. I thought so, the guy I was watching it with didn't agree. I mean, it makes sense to do it, so the roof/cup mat doesn't flip off and give a different subtext to the scene, but I couldn't quite tell. Anyway, what did you think?

There's a very fine line between committing a felony and doing something really super-cool.