Mousseline for Captain Beale

I made this when I came back from visiting a remarkable man who lives on the remote and beautiful Andaman Islands far south in the Bay of Bengal. My recipe has a delicate and sophisticated touch to it, which makes it a suitable dinner party piece, but the spices are exactly those which the boys on Captain Beale’s boat used when cooking the fish caught as we glided along between the islands. The tropical fish was strong and meaty, just right for the spices, which is why I have used kipper fo