Step 1

On the bone side of the ribs, work a butter knife between the membrane and the bone, then grab with a paper towel and pull the membrane off of the ribs. (If it tears while you’re pulling, work the knife under the remaining pieces and pull them off as well.) Sprinkle the ribs with the pepper salt (or salt and pepper). Put the thighs in a single layer in a large (gallon/3.8 liter) vacuum bag and seal. (At this point, the vacuum sealed ribs can be frozen for up to three months.) Sous vide at 167°F/75°C for 6 to 12 hours, adding an hour to the cooking time if the ribs are frozen.

Step 2

Preheat a grill on high heat for ten minutes. Cut open the vacuum bag and remove the ribs, discarding the liquid in the bag. Pat the ribs dry with paper towels, then brush with a coating of teriyaki sauce. Grill the ribs over high heat, flipping and brushing with more teriyaki sauce every two minutes, until the sauce tightens up and the ribs are browned on the edges. Serve as half slabs, or slice between each rib to serve as individual ribs.