Slow Roasted Beef (Cook's Illustrated) Recipe

I am a huge fan of roast beef sandwiches. I prefer that my roast beef is rare, while my husband prefers medium. Either way, a fresh sourdough roll with mayo and deli mustard, Swiss cheese and sweet pickles is my winning formula.

NOTE UPDATE ON JULY 1, 2014: Wow! This photo has gone viral on Reddit! It's funny to read the comments-- that this meat is raw. It's fake. It has face with a tongue sticking out (funny, and true...never noticed that before.) Let me say one thing-- this roast beef was bomb-diggity. Yes. it's cooked exactly the way I like it! If it's too rare for y'all, then cook it some more. One person said it would dry up in 10 minutes and be a dry roast. Nope. Didn't happen. Anyway-- welcome Reddit Army! I'm…