Impressive interior and a chic place for a quiet moment in a big and busy Amsterdam (Leidseplein).
The claim to have invented the Filet American, a dish unknown by any American. The claim is probably unjustified.
Filet Americain is likely derived from observations made by French-speaking Belgians of American soldiers in World War I eating their steaks (or Filets) without herbs or spices. In Belgium a steak au Americain means that you want an unspiced steak (save for salt and pepper). A Boeuf Tartare a la Filet Americain (or steak a la Americain) would be ground raw meat prepared in the way of a Filet Americain, meaning without seasoning.