Have you ever wondered why some English speakers do mysterious things with the letter 'R'? Some people add extra R's, some people hardly use them at all. Turns out that this is a main division between English dialects, and it's called Rhotic Speech. It was something I was always curious about, and I knew it was a regional (as opposed to national) thing, but it so happens that it's part of a quantified and well understood pattern.

Now, suitably forearmed with knowledge of non-rhotic speech, I'm able to instantly understand my mum in-law! Ah, but will my newfound insight allow me to pass the test of the non-rhotic/wine amalgamation? That remains to be seen...