Mahi mahi wrapped in pancetta with polenta chips

Prepare the polenta at least 2 hours before you cook the mahi mahi. Bring the water and salt to the boil in a large saucepan.

Add the butternut squash and rosemary. Reduce the temperature so that the water simmers gently.

Slowly whisk in the polenta. Cook, stirring often, for 3 minutes. Season generously with salt and freshly ground pepper.

Pour the polenta into a greased roasting tray about 1 and a half cm deep. Set aside to cool, then refrigerate until cold and firm, around 1 hour.

Turn the polenta out onto a chopping board and cut into 24 chips, each approx 8cm by 2cm.

Season the mahi mahi fillets with salt and freshly ground pepper.

Take 3 slices of pancetta and lay on a chopping board, each slice just slightly overlapping one another. Place a mahi mahi fillet on the pancetta and roll up over the fish.

Repeat the process making four pancetta-wrapped fillets.

Preheat the oven to 180ºC/gas 4.

. Preheat a large, heavy-based frying pan. Add the olive oil and heat through. Add the fish parcels and wrap gently, lightly browning on each side.

. Transfer the fish to a roasting tray and roast for 6 minutes.

. Meanwhile, preheat the vegetable oil in a deep fat fryer to 175ºC. Lightly dust the polenta chips with flour. Deep-fry until golden, around 3 minutes.

. Shake off excess oil and place the chips in a large mixing bowl. Sprinkle at once with the grated Parmesan.

. Meanwhile, melt the butter in a large heavy-based saucepan. Add the spinach, cover and cook for 2-3 minutes until wilted. Season with salt and freshly ground pepper. Drain slightly on a tea towel.

. To serve, make a tower of polenta chips on four warm serving plates. Place a sprig of rosemary on the centre of each tower. Place the fish alongside together with the spinach and a dollop of aioli.