Sweet And Sour Sauce
["2 c. water", "1/2 c. sugar", "2 Tbsp. ketchup", "1 1/2 Tbsp. vinegar"]
["Mix water, sugar, vinegar and ketchup.", "Bring to a boil, then add flour mixture.", "(Mix flour with water to make a medium texture, probably 1/3 cup of each.)"]
["water", "sugar", "ketchup", "vinegar"]