Beef Barbecue - cooking recipe

Ingredients

3 lb. beef roast
2 Tbsp. oil
1 onion
celery, salt and pepper to taste
1 c. catsup
2 Tbsp. lemon juice
2 Tbsp. brown sugar
1 Tbsp. Worcestershire
2 Tbsp. dry mustard

Preparation

Cook roast, onion, oil, celery, salt and pepper in pressure cooker until very well done.
Break apart with a fork.
Add remaining ingredients; cook and stir until well mixed.
Serve on buns.