Cardamom, ginger, vanilla, star anise, and grains of paradise—plus some actual black tea, because why not.
Zingiber officinale. One of the few root beer plants still used in soft drinks, though the mildly alcoholic drink called ginger beer, made with a ginger beer “plant” (sour yeast culture), is so out of fashion it might be due for a revival. And ginger is a perennial favorite of mazers, which is what you call mead-makers if you’re pretentious. Plus it’s readily available in any supermarket. So for all these reasons, I’ve brewed with it a lot over the years.