We created this recipe using our Sous Vide, which yielded perfect medium rare beef. If you don't have a Sous Vide, you can recreate this recipe by grilling the entire time. Your cook time will vary depending on the thickness (and quality) of your meat, but aim for 125 degrees internally before you remove it from the heat. It will generally achieve the last 10 degrees of cooking once removed. 134 degrees internally is ideal.