Darina Allen: Every trip to London is a chance to enjoy new culinary experiences

Dalla's Frittatina with 12 Year Aged Balsamic
I spent a few lovely days in London recently.
Ostensibly, I was over for the London Oyster Championships where Federico Fiorillo of Bentley’s in Mayfair shucked ten oysters in 1 minute and 5 seconds… can you imagine?