Originally Posted by Speedbird676

In every case that I tried, no. I know what a mousseline is, hence my confusion with their obsession - it is essentially somewhere between a sauce and a mousse. In each BA case, it has merely been mashed potato.

The "wasabi mousseline" on the LHR-JFK was wasabi mash.

The "baked Parmesan mousseline" on the CFU-LHR was Parmesan mash on top of a piece of cod, which was then floating in a "warm tartare sauce" which was actually the normal cream sauce you'd expect from a fish pie with chopped egg, capers and peas. Oddly it had what appeared to be mussels in it, too, which were not mentioned on the menu. Being such a love it or hate it kind of food I thought they would have highlighted their presence.