Salmon on potato onion rosti with mint aïoli

  • serves 2
  • Easy

Potato and onion rosti make a great base for different toppings. This recipe uses a mustard-grilled salmon and a rich garlic mayonnaise flavoured with mint. A quick, smart supper for two.





  • potato 1, grated
  • red onion 1 small, grated
  • flour 1 tbsp
  • olive oil
  • Dijon mustard 1 tsp
  • salmon 1 large fillet
  • watercress to serve


  • egg yolk 1, at room temperature
  • garlic ½ clove, crushed
  • Dijon mustard 1 tsp
  • vegetable oil 100ml
  • lemon ½, juiced
  • mint small handful, chopped


  • Step 1

    Make the aïoli by mixing the egg yolk, garlic, mustard and seasoning. Slowly whisk in the oil until it’s a thick sauce. Add lemon juice and mint.

  • Step 2

    Squeeze the excess liquid from the grated potato, then mix the potato, onion and flour. Season and form into two rostis, then fry in a little oil for 5 minutes on each side. Keep warm.

  • Step 3

    Brush the mustard over the salmon. Season and grill for 5 minutes. Break it into pieces and serve with the rosti, watercress and aïoli.

Nutritional Information

  • Kcals 769
  • Carbs 19.9g
  • Protein 24.9g
  • Fat 66g
  • Salt 0.52g
  • Saturates 9.3g
  • Fibre 1.5g