Further culinary adventures

I’ve managed to work right through lunch today without noticing, and the cafeteria here is closed. There is a coffee bar in the building that offers various healthy snacks – light cold sandwiches, fruit, yogurt, et cetera – so I can get some food, thankfully.

However, I was confronted today by a “filet american” sandwich. Reading through the ingredients list (conveniently available in Dutch and French), it looks like it contained beef, ketchup, salsa, and some other things. However, looking at it, I have precisely zero clue as to what is in an American filet sandwich.

I feel some sort of ownership of this, being American and all. Any ideas? Has anybody else come across this?