Recipe Method

1. In a large bowl, whisk together the lemon juice, olive oil, garlic, mustard, 1 teaspoon of salt and pepper. Set aside.
2. Place the potatoes in a large pot and cover with cold water.
3. Stir in 1 teaspoon salt.
4. Bring to a boil and cook until soft, 10 - 15 minutes.
5. Drain the potatoes and place into lemon mixture and coat well.
6. Refill the pot with water and bring it to a boil.
7. Prepare a bowl of iced water nearby.
8. Drop the green beans into the boiling water and cook for 2 minutes.
9. Drain and immediately place into the iced water.
10. After 1 minute, drain and place on a kitchen towel to dry.
11. Add beans and onions into potatoes and toss well.
12. Season, to taste.
13. Transfer to a platter.
14. Top with the red onions.
15. In a small bowl mix the sour cream with 1 tablespoon of the chopped chives.
16. Drizzle over the salad and sprinkle with the rest of the chives, chilli flakes and black pepper.