It was nearly 25 years ago but I still remember the "to die for" mocha cake at "The Shed" in Santa Fe, N.M.
A Google-search indicates that it is still served and still highly touted.
My wife still remembers it as well. She does not like strong/rich/dark chocolate so I pulled a bit of a prank and said "Mmm, this cake is good, try a bite..." It was so strong it almost gave her whiplash!
Gosh...I may have to go back...I'm making myself hungry!