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A tomahawk steak on a cutting board, with slices showing medium-rare doneness, and a slicing knife in the background

Sous Vide Tomahawk Ribeye Steak


Sous Vide Tomahawk Ribeye Steak. Massive ribeye steaks with a Flintstones-worthy bone cooked Sous Vide in my (extra-large) container.


  • 2-inch thick tomahawk ribeye steak (about 2 ½ pounds)
  • 1 teaspoon fine sea salt (or 1 ½ teaspoons diamond crystal kosher salt)
  • ½ teaspoon fresh ground black pepper


  1. Prep the sous vide water bath: Preheat the sous vide water bath to 135°F/57°C for medium-rare plus. (Medium-rare is 130°F/54.5°C, medium is 140°F/60°C, rare is 120°F/49°C).
  2. Season and vacuum seal the roast: Measure a roll of vacuum bag long enough to fit the roast. Seal one side of the bag, then season the roast with the salt and pepper, slide it into the bag, and vacuum seal the bag.
  3. Sous Vide the roast: Put the bagged roast in the sous vide water bath, and sous vide for at least 3 hours or up to 6 hours. (If cooking from frozen, cooking time is 5 to 8 hours). Remove the roast from the vacuum bag and pat dry with paper towels.
  4. Sear the roast: Preheat a grill set for high heat on one side of the grill (For my Weber Summit, I preheat the grill with all burners set to high for 15 minutes, then turn off half the burners and leave the other half on high. For my Weber Kettle, I light a full basket of charcoal, then spread it out over ⅓ of the grate, about 3 coals deep, with no coals on the other side) Sear the steak for 4 minutes, flipping every minute, and rotating the steak 90 degrees after the first flip to get a crosshatch of grill marks, and moving the steak if it starts to flare up. (There is a lot of fat in a ribeye - it will flare up.)
  5. Slice and serve: Let the steak rest for a few minutes, then cut it away from the bone. I slice the steak into 1/2 inch thick slices to serve, and take the bone as a chef’s treat.


Don’t have a blazing hot grill? You can broil for 1-2 minutes a side with your oven broiler set to high, with the steak as close to it as you dare. My broiler doesn’t get as hot as my grill, and I want a nice sear, so I go with the grill.

I can’t use my usual “ripping hot cast iron pan” trick, because the bone won’t let the steak lay flat in the pan. If you have a flat cast iron griddle it might work, but all I have are frypans with high sides.

This massive steak serves 2 to 4 people, depending on how carnivorous they are. (It’s more of a small roast than a large steak.)

The wide range of cooking times is because Sous Vide will hold the meat at the temperature of the bath. 3 hours is the minimum, but you can leave the beef for a few hours without any loss of quality. What happens if you keep going? The meat starts to over-tenderize. (I use this trick with tougher cuts on purpose, but with a tender cut like ribeye, I don’t want to over-tenderize it.)