Marinade the caribou with the vinegar, garlic and salt in a plastic bag turning occasionally, over night in the refrigerator. Remove from the marinade and discard it, pat dry, roll in flour and brown in a little oil in a hot skillet. Make a paste of the remaining ingredients and smear over the roast. Place in a preheated 450 deg oven, reduce the heat to 300 and roast 60 -80 min until finished to desired doneness. Deglaze the pan and make gravy.