What: Bombai chai (£1.60)
Where: Caffe Concerto, branches in Kensington, Regent's Street and Chelsea. caffeconcerto.co.uk
Taste assessment: I thought proper chai was meant to be a little bit sweet and a little bit milky. This one is watery, bitter and not worth stepping out of the office for, however much I need a mid afternoon pick-me-up. The only good thing about this is the price (there's a lot of liquid) and the fact that the teabag floats so I didn't scald my fingers taking it out.