Sloppy Joes Or Hot Dog Sauce

1 Lb. ground beef 1/4 C. ketchup (1/4 to 1/3) 2 Tbs. mustard 1/4 C. sugar 1 Small onion Place hamburger in skillet and barely cover with water. cook until hamburger is no longer pink. sugar and onion. Heat on low heat until bubbles and simmer about 3 to 5 minutes.