What cut of beef is “fillet of beef”?

Question

I usually cook vegetarian dishes because it's easier for me although I'm a huge carnivore. I'm taking a stab at this steak sandwich recipe which calls for "fillet of beef". What does that mean? Which cut (chuck roast, london broil, etc...) can I get? Surely Ina Garten does not mean fillet mignon?

Answer

I believe it's another name for the tenderloin. http://www.recipes4us.co.uk/Beef%20Cuts.htm

Also, if you check out this other fillet of beef recipe from the same show: http://www.foodnetwork.com/recipes/ina-garten/fillet-of-beef-recipe/index.html You can see a much better picture of the meat. That one is clearly a tenderloin.

So The Fillet Mignon is part of that technically...

Check more discussion of this question.