Once again I am late to the show. Way over done for me, but that could easily be remedied with correct equipment. 85% of my family would have considered this meat perfectly cooked.
This piece of meat would have needed to be marinade because it had no flavor. I understand why a friend on the SFF forum said it needs to be at 125° water temperature, cuz I would have preferred to sear a rare piece of meat then a medium piece. But without eating this, there is no way I would have believe you could take a cut, that would usually need 3-4 hours at a braising temperature to even get close to being this tender, and have it come out like it did...it is truly amazing.
If you have never had a piece of tough beef cooked in a sous vide process, and you have a vac sealer and a crock pot that will stay below 140°, you need to experience it!
I think if I had a unit that would go to 115°, that is what I would cook to as I am not a fan of the French style of steaks, with the pan sear. If I have a Bordelaise or a Bernaise or even a Madeira I could see not even worrying about searing and just finishing with it. And for this cut, with no flavor a sauce like that would have been perfect.
But if I am going to have a steak, I want some char on it! And with the meat at 115°, I could get a nice char on both sides and I bet stay under 135°!
From a tenderness standpoint, this is a phenomenal technique. If I had it to do again, I would have poured the bag goo in with the instant potatoes as they were being mixed!