Crispy potato rosti with salmon, beetroot, horseradish sour cream

Put potatoes in a large saucepan of cold, salted water. Bring to the boil over a medium-high heat, cooking for 15 minutes or until cooked, yet still very firm. Drain and set aside to cool to room temperature.

Combine sour cream and horseradish in a small bowl. Cover and set aside in fridge.

Slice baby beetroot finely using a knife or mandolin. Transfer to a large bowl. Add sugar and salt, and toss well. Drizzle with 2 Tbsp of the oil, toss again and set aside at room temperature to soften slightly.

Meanwhile, use coarse side of a box grater to grate cooled potatoes onto a tray, making sure not to crush potato pieces too much. Scatter over large beetroot and flour, then season. Gently toss together to combine. Shape mixture into patties the size of a tennis ball without crushing the grated pieces.

Heat the extra 120ml oil in a large frying pan over a medium heat. Fry rosti patties, in batches to avoid overcrowding pan, for 3 minutes each side or until cooked through and crispy on the outside.

Slice salmon into 1–1.5cm slices. In another frying pan, heat the remaining oil over a high heat. Season salmon, then sear for 45 seconds on each side.

Put 2 rosti on each plate with a dollop of horseradish mixture, 2–3 salmon slices and a few slices of baby beetroot. Scatter over chives and crown with a spoonful of caviar. Serve with lemon on the side.