Prudence, being in no small part a snob, takes her coffee very seriously.
So, on a weekend away to a place that has a strong food and wine tradition, she was reasonably confident of getting a decent brew with her breakfast.
Especially as her beloved, who is a barista, and in no small part responsible for her coffee snobbery, had a long and technical discussion with the barista of the breakfast establishment about the beans, the grind, the pour and so on.
And still the latte that arrived was scowl-inducingly bitter.
So, how does one, when confronted with an egregiously sub-standard beverage, but quite a reasonable breakfast, complain with grace.
Prudence was brought up altogether to well to do this and achieve the desired result.