"Correct me if I'm wrong!"
Not wrong at all - that's exactly it.
A good barman will pour Guinness in two stages - first, full with foam; then more steadily the second time - then, wipe the foam off the top with a knife
As I said, and art form.
You can always tell a sour pint when it fill up at the first go - and each mouthful leave the ring where the previous level was
Jeysus - wasn't intending to go out tonight!!!
The though of the pint and the session calls.
Jim Carroll