This past summer I talked Teal into letting me get a an Anova Culinary Bluetooth Precision Cooker. It was a bit of a stretch as she once again thought I was crazy and then crazier still when we then went to Costco and picked up an enormous roast.
The roast was portioned out into 1.5-2″ thick slices and seasoned with salt, pepper, garlic and fresh thyme, marjoram and oregano. Each was then vacuum sealed, dated and thrown in the freezer, except for for the first dinner. First steak was cooked at 129 degrees for 90 min. We have since moved to 130 for 2 hours as the sweet spot for these steaks as our standard.
Prior to grilling remove as much fat as you can. This prevents flare ups and a sooty / bitter exterior. You want a clean crisp dark brown but not black surface. Grill needs to be blazing hot 700-900 degrees for 2-3 min per side. I use the Big Green Egg but you can get similar heat by placing the grill right on top of the charcoal chimney. Note that the sliced steak photo is NOT the way to go – trim the fat and life is much easier.
The technique works perfectly whether doing 1 or 6 of these . Perfectly consistent and fork tender.
The Serious Eats and Anova web sites provide lots of ideas for Sous Vide cooking. I also strongly recommend: The Food Lab: Better Home Cooking Through Scienceby Kenji Lopez Alt. I first ran across his posts on Serious Eats and the book is a must have for anyone who is looking to go from just experimenting a bit to really understanding what they are doing in the kitchen.