4 large scallops, sliced in half across the equator
squeeze of lemon juice
veg oil for frying the scallops
ground black pepper
Ingredients for the dressing
1 tbsp grain mustard
100ml olive oil
25ml white wine vinegar
salt and pepper
tbsp chives, chopped
Step 1 : Prepare the potatoes
Grate the potatoes coarsely onto a clean tea towel. Wring out the excess moisture by twisting the towel tightly around the potato and squeezing hard. Mix in 25ml clarified butter (see tip below) or duck fat and season well. Do this quickly or the potato will start to discolour.
Step 2 : Cook the rostis
Heat the remaining clarified butter in a 20cm frying pan. Quarter the potato mixture and add to the frying pan to make four rosti. Press down with a spatula to ensure the bases cover the pan and will cook evenly. Cook at a medium temperature for 8-10 minutes until you see traces of colour at the edges. Add a slice of haggis onto each rosti. Cook for another minute, then cover with more potato and lightly press down. Now carefully turn the haggis rosti over and cook until golden on both sides (5-6 mins). Transfer to a wire to cool. This can be made in advance and left at room temperature until ready to use then reheated in a moderate oven (180C) for 5 mins.
Step 3 : Prepare the salad
To make the dressing mix the mustard, olive oil, vinegar, salt, pepper and chives together well.
Step 4 : Cook the scallops
Heat a tbsp veg oil in a frying pan until hot and quickly sear the halved scallop rounds for 30 seconds on each side until golden. Season well and squeeze over a little lemon juice.
Step 5 : To serve
Toss the salad leaves in a little oil and lemon juice.
To serve, place a warm rosti on each plate, top with halves of hot scallop and a few dressed leaves. Drizzle the mustard dressing around the plate and serve immediately.
Step 6 : Tip on clarified butter
Clarified butter is just the oily part of butter, i.e. without the buttermilk. It gives potatoes a rich, buttery flavour. It will heat to a higher temperature than ordinary butter without burning. You can buy it ready prepared as ghee.
However, it’s easy to make: To make about 200ml, take 250g of unsalted butter and melt on a low heat in a small saucepan. Allow it to stand for a few minutes until all the oil rises to the top, then skim off the oil into a sealable plastic container. It will keep for 2 months in the fridge.