This recipe calls for fillets of smoked salmon that are prepared in the same way as smoked haddock fillets and need further cooking. "Something Fishy" a fishmonger in Broughton st Edinburgh prepares his own smoked salmon and haddock, these fillets are moist and full of flavour. Smoked salmon fillets have become popular in the last few years and are available from many supermarkets eg. waitrose sells them in many stores in their fish section. If you can't find smoked salmon fillets simply use fresh salmon.