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Try this lovely dish of fresh, inexpensive mackerel with a creamy potato salad, perfect for a simple supper or lunch.

PREPARATION TIME: Less than 30 minutes

COOKING TIME: 10 - 30 mins

SERVES: 4

INGREDIENTS

For the horseradish potatoes

• 500g/1lb 2oz new potatoes, cooked in their skins
• 2 tbsp olive oil
• sea salt and freshly ground black pepper
• 2 shallots, finely sliced
• 2 tbsp soured cream
• 2 tbsp creamed horseradish
• 2 tbsp finely chopped fresh chives
• watercress leaves, to serve

For the spiced mackerel

• 8 mackerel fillets
• 100g/4oz butter, softened to room temperature
• 4 free-range eggs
• 1 tsp cayenne pepper
• 2 tsp sweet smoked paprika
• 1 tsp ground coriander
• 1 tbsp golden caster sugar
• ½ tsp English mustard
• few drops Tabasco
• 2 tsp red wine vinegar
• sea salt and freshly ground black pepper

METHOD

1. For the horseradish potatoes, bring a large pan of salted water to the boil and boil the potatoes, in their skins, for 10-15 minutes, or until tender. Drain and, when cool enough to handle, cut into quarters.
2. Heat the olive oil in a large frying pan over a medium heat, then add the potatoes and season, to taste, with sea salt and freshly ground black pepper. Fry the potatoes for 7-8 minutes, turning occasionally, until crisp and golden-brown. Remove the fried potatoes from the pan and set aside to drain on kitchen paper.
3. Meanwhile, for the spiced mackerel, preheat the grill to its highest setting. Score the skin of each mackerel three times on each side using a sharp knife.
4. Preheat the grill to high.
5. Mix all of the remaining spiced mackerel ingredients together in a bowl to form a thick, spiced butter and season well with sea salt and freshly ground black pepper. Rub the butter over the mackerel fillets, then grill for 4-5 minutes, turning once, or until just cooked through.
6. To finish the horseradish potatoes, transfer them to a mixing bowl. Stir in the shallots, soured cream and creamed horseradish and season, to taste, with salt and freshly ground black pepper. Stir in the chives.
7. As soon as the mackerel are cooked, transfer to serving plates and spoon the horseradish potatoes alongside.

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BBC Food - Mark Sargeant