Slice of boiled potato, Bufalo butter, Caviar.

Toasted Tuscan Bread, butter, salted anchovy ( home made)

It might have been because the bread with salty anchovy was the tantalizing appetezer that my father used to offer me since I was a little girl, thus the taste is a rooted memory of my pallate...I prefer the second one to the Caviar. 
No comparison. 
Too big difference.
Anchovy wins.