Depends on how strong you want it to be. I would probably taste the vodka to find out just how much spice seeped into it. Then, I might add it to your beer and gently incorporate it, then sample that to taste. If it needs even more spice, consider adding it to the fermenter.
Beer so good, it's frightening.
2014: Seven Heavens Series One: Vilon, Mystic Melomel, Skeeter Pee.