I'm watching a rerun of Top Chef Masters right now, and Hubert Keller made Scottish Salmon Mi Cuit.
I couldn't help but go "ok, but what did he DO?"
Apparently, you can Mu Cuit lots of stuff. Tomatoes, chocolate, caramel, plums. Salmon. Lots of stuff!
After chasing all over google creation to find out, I learned that it means "semi-cooked" (you'll also see "partially cooked" as an option as well). So he served semi-cooked salmon.
And there you go...