French Dip Sandwiches

2-3 lbs rump roast
1 1/2 cups cider
2 cubes beef boullion in
-2 cups water
1 can beef broth
1 clove garlic
1 tsp oregano
2 tsp sugar
1 pkg dry onion soup mix
fresh mushrooms

mix togther in dish

bake 300 for 3 hours