2 x 160g tins tuna chunks in spring water, drained
For the horseradish dressing
2 tbsp hot horseradish sauce
1 lemon, zested and juiced
3 tbsp extra-virgin olive oil
Method
Preheat the oven to gas 7, 220 ̊C, fan 200 ̊C. Halve the potatoes, return to their foil tray and roast for 30-35 mins until crisp.
Meanwhile, cook the eggs for 6 mins in a small pan of boiling water. Use a slotted spoon to transfer to a bowl of cold water for 2 mins before peeling and quartering. Leave the boiled water in the pan.
Whisk together the dressing ingredients in a large bowl; season and set aside. In the pan of water the eggs were cooked in, boil the beans for 3 mins or until cooked but still crunchy. Drain, then add to the horseradish dressing, along with the tomatoes and olives. Toss to coat.
With a slotted spoon or tongs, divide the mixture between 4 plates (or use 1 large platter). Top with the tuna, potatoes and eggs, then drizzle over the dressing left in the bowl. Grind over extra black pepper to serve.