Picante Sauce
["3 large onions, chopped", "1 c. sugar", "1/2 c. vinegar", "3 (10 oz.) cans Ro-Tel diced tomatoes and green chilies"]
["Put in large pan and boil to desired thickness.", "Will keep in refrigerator for a long time."]
["onions", "sugar", "vinegar", "Ro-Tel"]