I did the truffle infused custard with black truffle ragout tonight, although I switched the truffle ragout for a mushroom ragout (minced white mushrooms sweated in butter, chicken stock added, reduced and then seasoned with a little sherry vinegar, salt, papper, dash of truffle oil added before serving) and didn't do the chive potato crisps. It was very nice. However, I wonder about the texture of the result. Are you supposed to end up with a creme brulée texture (shiny and sort of firm), creamy or (like mine) more of a fluffy texture? Fluffy doesn't feel right. I did cook in a bain marie (although on the stovetop) and my dish definitely didn't break (hey, it was good!). Maybe I had too much air left in the custard base? It rested for an hour in fridge befored I started cooking it, but there might still have been a lot of air left.