The menu isn't familiar either, with not a moules frites in sight. I started with crab: a creamy, fishy mound piled on toast. It was a faultless starter but it would be even nicer if someone could serve it up to me at home, on a late-night supper tray. The novelist chose native oysters (she's on yet another diet, and I was paying) and said they slid down a treat - though she did have two quibbles. Firstly, that she prefers to prize the crustacean from the shell herself and secondly, that there is no restaurant in London that sends out butter at room temperature.