Which Downer Am I!

[The Squatter of Amon Rûdh]

Camomile tea isn't particularly suspicious, although it is the beverage most likely to be mentioned in novels that begin with a chapter of described internal monologue. Incidentally, my rule of thumb is that where camomile tea is mentioned in the first paragraph, the second will probably contain the phrase 'she remembered' and the third won't be worth reading.

Anyway, I digress. I didn't realise that there were so many tea-related names here. That part of the clue (which isn't exclusively to do with tea) is probably the part to focus on, but it's only one part of the answer.