1. Mix 600 grams of cold leftover mash 2. Two tins of drained tuna 3. Tablespoon of Mayo 4. Chopped herbs 5. Handful of frozen sweetcorn 6. 3 spring onions finely chopped 7. Mix and season 8. Divide into 6 equal balls 9. Roll into bread crumbs 10. Press into fishcakes 11. Fry for 4 minutes 12. Serve with salad