Fish cakes with dill tartare sauce

Step 1

For the fish cakes, put the mashed potato in a bowl and break up with a fork. Flake in the salmon, then season well with salt and pepper and add the lemon zest and dill. Stir well to combine – you can use your hands for this, then shape into eight fish cakes. Chill in the freezer for 10 minutes if possible, just to firm up before you coat them.

Step 2

To coat, divide the plain flour, one of the eggs and half the breadcrumbs over three plates. Dip the fish cakes in each plate, in that order, shaking off excess as you go. This does get messy, so do it in two batches. If you have time, chill the coated fishcakes to firm up – this time in the fridge and for at least 20 minutes, preferably longer.

Step 3

To fry, heat the oil and butter in a large frying pan. Fry the fish cakes on each side for a few minutes until they have developed a good golden-brown crust and the centres are hot.

Step 4

To make the tartare sauce, put the egg yolk in a bowl or food processor with a generous pinch of salt and the mustard. Whisk or pulse briefly, then very gradually start adding the oil. When you have an emulsion, you can start adding the oil in a steady, slightly faster stream until it is all incorporated and you have a thick mayonnaise. Stir through the remaining ingredients.

Step 5

Serve the fish cakes with a dollop of salmon caviar and the tartare sauce on the side.