Heat a dash of oil in a baking pan. Brown roast on all sides. Place in an iron pot. Reserve.
Preheat oven to 140°C.
Mix all the ingredients of the marinade and poor over the roast.
Close the pot and cook for 7 hours. Do not hesitate to cook in two times and leave the roast to rest in the meantime in your kichten table all night soaking in the marinade. Will taste even better.
Sprinkle regularly with the sauce in which the roast is bathed.
Using two forks, fray the roast. Sprinkle with the sauce and mix before serving.