1/2 bottle catsup
1/2 c. water
1 tbsp. vinegar
1/2 can tomato soup
2 tbsp. lemon juice
2 tbsp. Worcestershire sauce
1 tbsp. brown sugar
1/4 tsp. dry mustard
1 med. onion
1/4 c. chopped celery
2 c. shredded roast beef

Cook slowly for at least 30 minutes.