BARBECUE BEEF

This is the best Barbecue Beef recipe!  It is great for picnics or large gatherings, because it makes a TON! Plus - it's super easy, just throw everything together and let it do it's thing. :)
4 cups ginger ale
1 chopped onion
1 clove crushed garlic
3 cups Ketchup
1 TBS Worcestershire sauce
1 TBS white vinegar
1 tsp salt
1/2 tsp pepper
1/2 tsp dry mustard
1/2 tsp lemon juice
1 cup brown sugar
1 large roast (rump or round is best)

Cook above ingredients for 8 hours at 300* - 325*. Shred and serve on buns or rolls. Serves about 20 - 25 people.