These herby croquettes filled with fluffy mashed potato and surrounded by a crisp breadcrumb coating are the perfect vehicle for any scraps of fish you have left over from trimming fillets or filleting whole fish. You could also use leftover cooked fish. However you make them, they’re just the thing to serve with a chilled glass of white in the garden with friends. Check out more delicious ways to cut down on food waste in our sustainable recipes hub.