1 lb. shaved ham
1/2 c. water
3/4 c. ketchup
2 tsp. vinegar (cider)
1 tsp. Worcestershire sauce
1 tsp. celery seed
1 1/2 tsp. dry mustard
1 tbsp. sugar

Combine all ingredients except ham. Simmer until well blended. Add ham and heat through or make sauce and store. Heat sauce and ham together before serving. (I do this in a crock pot.) Serve on buns.