I have made this a number of times over the years, a long marinating time and slow cooking is the secret here! this is an easy recipe with wonderful results! --- you must plan ahead the roast needs to marinate for 24 hours or even up to 3 days --- if you are a garlic lover cut slits in the roast and stuff with whole garlic cloves if desired, If you have plastic gloves then use them to rub the spices into the meat if not be careful the cayenne is very hot --- you will love this!