Whenever there are some left over fried fish at home, chances it will end as either cardillo or sweet-and-sour. While the former is cooked by adding beaten egg to the sauteed fried fish for a savoury dish the latter has the vinegar and sugar combination that creates a flavourful sauce for the fish. And there so many variations to the sweet and sour fish recipe but all point to the delicious mix of " sugared vinegar "! Here's the recipe for Sweet and Sour Fish