Sloppy Joes
["15 lb. hamburger", "3 qt. chopped onions", "2 qt. chopped celery", "4 Tbsp. salt", "pepper to taste", "1/4 c. dry mustard", "1/2 c. sugar", "1/2 c. brown sugar", "1 gal. ketchup", "1 c. vinegar"]
["Cook together the hamburger, onions, celery, salt and pepper to taste until meat is browned, stirring often. Add the sugar, brown sugar, ketchup, vinegar and dry mustard.", "Simmer 2 hours. Serves 100."]
["hamburger", "onions", "celery", "salt", "pepper", "dry mustard", "sugar", "brown sugar", "ketchup", "vinegar"]