Sweet Potato Fish Cakes
Boil the sweet potato in salted water for 20-25 minutes until tender. Drain off the water.
Add in the butter and mayo, season generously with salt and pepper. Mash well until all the lumps are obliterated.
Transfer to a large mixing bowl and stir in the dill, lemon juice and onion.
Flake in the tuna. Don’t over-stir, you want some of the chunks to remain intact.
Shape into patties, chill for 30 minutes then broil or fry until golden on both sides (I stuck mine under the broiler and did them for 10 mins on each side).