Vanilla is a product of Lussumo:
Documentation and Support.
Actually, even in the first movie theirs scenes of Tony around alcohol. It's obvious they are leading up to it, wonder if it will be in IM 3Favreau said in the commentary for IM2 that the birthday party scene was the closes Marvel would let him get to doing Demon in a Bottle. They'd actually made him cut a couple of other drunk Tony scenes. And with IM 3 apparently pulling a lot from Extremis and maybe finally having The Mandarin, I don't see how they can squeeze in Tony coming to grips with his alcoholism and doing it justice.