[Sephiroth]

Originally Posted by mrmistoffelees

I love a good blue steak, I'm perhaps missing something but find it only really works with fillet.

There's a reason for that. If there were any fat veins running through the meat (e.g. Rib Eye, Sirloin), they would spoil the overall experience if the surrounding meat was rare. That's why the rarest that's recommended for non-fillet steak is medium except for Rump, where medium-rare is the rarest it should be.