I think you may have misspelt a word, "roulette" is a kind of game played at casinos, not a dish! Do you mean rillette? Maybe rouille?

Could it be this: http://www.stuff.co.nz/the-press/christchurch-life/avenues-3/food/2918223/Smoked-salmon-roulette Well, as long as it is not russian roulette !!

It is Salmon Rilette or it is also called Salmon Roulade or Swirl ,yummy so tasty and healthy ! Roulade comes from the French word 'rouler' ,which means 'to roll ' The following video shows how to prepare ( not a very elegant way in this video ,but the one I found ) : https://www.youtube.com/watch?v=BPXW5R9vBe0

i was watching Friends S1E18, and the script read 'salmon roulette'. but after reading all the answers, i re-watched and listened the scene again, i think Monica said salmon rilette. thank you all.