The first stage of this dish is to create the marinade, and marinate the tuna steak. Create the marinade by combining the soy sauce, and honey together in a small bowl. Ensure that all three ingredients are well mixed into a glossy emulsion.
Add the tuna steak to the bowl, and roll it over and over in order to coat thoroughly in the marinade.
Marinate the steak for one hour, 30 minutes on each side.
Once the steak has been marinating for an hour, it’s time to start cooking. Cut the sweet potato into wedges (leaving the skins on), and place in a roasting tin.
Drizzle a little olive oil over the wedges, stir well, then place in a hot oven and roast for 20–25 minutes, stirring occasionally.
When the wedges have been roasting for about 15 minutes, heat a little olive oil in a shallow frying pan, and add the tuna steak. Fry for about 10 minutes, 5 minutes on each side.
Just before serving, finely chop the clove of garlic, and stir through the wedges. Return the wedges to the oven for another minute, then its’ ready to serve.