I wonder if it was RTC because it had been hanging around too long and had lost its freshness?
It was excellent fun. I found it hard to choose favourites though the Lustau Puerto Fino considerably outperformed my expectations. What was most interesting was how extraordinarily different they all were. They made a splendid and highly digestible accompaniment to fish and chips, in fact I can't think of a better one, finding beer tastes of soap with deep fried food and table wines somehow compromised. Champagne is good, of course, but far harder on the stomach.
Very sorry not to be able to join as the theme and venue a neat intersection of interest. I'm extremely jealous of what sounds like a super lunch. Well done Warren.