The story behind Caesar salad

You can dial back (or away) anchovies and dial up Worcestershire, but Worcestershire is just British fish sauce. There's a long-running message board thing about whether anchovies are "authentic" to the original Caesar; for me, anchovies are basically the point of a Caesar (not whole filets on top of the leaves, just blitzed into the dressing).

What tradition is that though, like when you omit the fish content?

Ive had good salad dressings like this where they actually list worschestchire sauce and then in the parenthetical ingredients to that it doesnt have any anchovy or fish given and also not in the usualy summation of various allergenic food categories. I just worry its hidden in the Natural Flavor bullcrap