Preheat the oven to 375 F. In a bowl, mix olive oil, mustard, honey, and sugar. Rinse pork and pat dry with paper towels. Sprinkle on seasonings.
Lay down 2 pieces of foil one on top of the other and lay meat in the middle. Rub 2/3 of the marinade over the meat. Make cuts on the skin and spread with the remaining into the crevices.
Place a whole clove into the cuts in the skin - it will give the pork flavor, but the meat will not be bitter. Wrap the pork in the foil so it is enclosed. Place into a dutch oven or any casserole dish with a lid.
Cook covered for 2 hours. Open the lid, unfold the foil and cook for another 20 minutes to brown. Ensure it has reached a safe 145 degrees F in the thickest portion before removing. Allow to rest for 10 minutes before slicing.