Red pesto salmon fishcakes

Method

1. Put the potatoes in a large pan of water, cover and bring to the boil. Simmer for 15 minutes, until tender. Drain well, return to the pan and add 4 tablespoons red pepper pesto. Mash until smooth. Finely grate 25g parmesan and stir into the mash with the lemon zest. Season with pepper. Set aside to cool slightly.
2. Meanwhile, put the salmon on a heatproof plate, cover with pierced cling film and microwave on medium (750W) for 3-4 minutes, until cooked but a little pink inside. Cool slightly, then discard the skin. Flake into large chunks and mix into the mash. Shape into 12 fishcakes and flatten slightly.
3. Put the fishcakes on a baking tray, chill, then open-freeze for 2 hours until solid. Transfer to a food bag, label and freeze for up to 2 months. Thaw in the fridge for 12 hours, then bring to room temperature.
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5. Preheat the oven to 220°C/fan200°C/gas 7. Finely grate the remaining parmesan and coat the fishcakes in it. Put on a baking sheet lined with baking paper and cook for 20 minutes, turning halfway, until piping hot and golden.
6. Mix the mayonnaise with the remaining pesto. Serve 2 fishcakes each, with a dollop of the mayo, a lemon wedge and some rocket.