Sorry if this is a very obscure question, but I don't know where to ask it.
120ml of oak extract, made by soaking oak chips in ethanol, was added to a flask. At this point, the solution was very dark with zero precipitate. 13ml of vanilla extract, consisting of ethanol, water, vanilla, and corn sugar were added to the solution. This extract was also free of precipitate before being added. Immediately upon adding the vanilla extract, a large amount of precipitate fell out the solution. Can someone please explain what happened, and what fell out of solution?