I had some headspace in my secondary after racking a beer into it, and simultaneously added a split, seeded, and chopped vanilla bean. I noticed that some condensation was building up inside the carboy, but didn't look at if very closely. Today I was looking very closely, and noticed vanilla dots inside the moisture drops. It looks just like the tiny black dots in vanilla bean ice cream. I just hope it gets cooler so they'll rain back into my beer! Those things are pricy haha