Question: how long does it take to sous vide a pork tenderloin?
Answer: Seal the bag and drop it into the water bath. Cook the pork in the sous vide bath for at least 1½ hours, or as long as 4 hours. Remove the pork tenderloin from the bag and dry it lightly with clean paper towels. Discard the rosemary sprigs, but reserve the cooking juices in the bag.