Does La Tupina live up to the hype?

Talk to anyone about the food scene in Bordeaux - and they’ll say in reverential tones - ‘Aaah, but have you been to La Tupina’. I have, twice now, and while I can understand why it stands out in a city that curiously doesn’t have the quality of restaurants to match its wine I’ve never been quite as blown away as my fellow customers seem to be.