I know that feeling.. Local Restaurant had the best Steamed Mussles that my friend has ever had (Best I've ever had too but.. Well, they are also the worst I'v ever had (only I've ever had?) so my opinion don't count.. They were very very good)
We went to have dinner there specifically due to that dish.. CLOSED
Turns out the owners had the business equivlant of a divorce.. It's now a Mexican place and we both like Mexican as well. but I have to admit those Mussles were fantastic... I do have the recipe on hand though so when I get time to research a bit more.. I will attempt.