THE ANSWER IS TEA
The Phantomhive household is well stocked with a variety of exquisite tea blends. Throughout the series of Black Butler and we see tea brewed, served, and enjoyed many times throughout the series. There has long been a love affair between the Doctor and his tea in the long running British series. More recently, the Doctor (played by David Tennant) needed tea to help him through his ninth regeneration. And for Avatar the Last Airbender fans, everyone knows that Zuko’s uncle Iroh loves his tea.