It's been a long time since I've seen the movie, so maybe I'm remembering something that isn't there.

The scene is the one where Mina goes into that pavilion with the shadow puppet show, and then she meets up with Dracula (looking all sexy in his little round glasses). They go off together and he gives her a glass of absinthe (they're sitting at a little table, like a private room in a restaurant) in a champagne flute. It's green, and burns a cube of sugar on a spoon over a flame and drops it in.

That's where I think there's a close-up on the glass... but it might be after Mina starts hallucinating. Images blur by, and one of them is of the champagne flute of fizzing green liquid.

Like I said, I might have made up an image in my head that doesn't actually exist on screen. Sorry!