Wash and dry the meat. Trim off fat and tendons. Peel the garlic and finely chop it with a knife. Prepare a bag: strong or even double, very thin bags will not work.
Mix salt and all the spices in a bowl, rub a piece of meat with this mixture on all sides, then rub with garlic. Place the meat in a bag, release the air and tie it in a knot. Then put it in a second bag and tie it again.
Pour cold water into the pan and place the meat in the bag. The water should cover the meat. Place on the fire, bring to a boil and simmer over low heat for 2 hours. After cooking, carefully remove and cut the bags, release the steam.
Cut the pork into thin slices and serve with lettuce, mustard and sauces.