got my Joule yesterday and made the CS Carne Asade. With some trepidation I cooked the flank steak at 131 for 8 hours. It was still a lovely medium rare at completion with a slightly less chewy texture that flank steak has. Seared it in a very hot pan with clarified butter, sliced thinly and had with tortillas. I am now making bread and dropped the temp to 80 and have my poolish fermenting on top of the sous vide (someone posted this and it is a great idea).