Sloppy Joes
["1 large onion", "1 Tbsp. oleo", "1 lb. hamburger", "2/3 c. ketchup", "1 Tbsp. mustard", "1 Tbsp. sugar", "1 Tbsp. vinegar"]
["Brown onion in oleo.", "Add hamburger; brown and drain off excess", "fat.", "Add", "ketchup, mustard, sugar and vinegar.", "Simmer 10 minutes."]
["onion", "oleo", "hamburger", "ketchup", "mustard", "sugar", "vinegar"]