Carolina Roast Venison

5 pounds venison roast

1 onion, chopped
1/4 cup barbecue sauce, see below
1 tablespoon salt
2 tablespoon vinegar
black pepper
Barbecue Sauce:
1 tablespoon black pepper
1 tablespoon salt
1 small box dry mustard
1/4 cup sugar
1/4 cup vinegar
1/4 cup water
1 stick butter/margarine
For sauce: Mix dry ingredients. Add vinegar, water and mix. Bring to
full boil and add stick of butter and continue to cook until butter
melts. This makes 1 Pint of the Sauce.
Soak venison in water, vinegar and salt for 4−5 hours. Remove and
wipe dry. Sprinkle lightly with pepper and brush with sauce. Add onion
and enough water to cover bottom of covered roaster. Bake in 325F oven
the first hour; then lower heat to 275 F for an additional 3 hours.
Baste often with sauce and juices from roast.