Potato radish salad
Bring a large saucepan of water to the boil. Add the potatoes and simmer for 15-20 min, until tender.
Drain and place in a large salad bowl. Allow to cool.
Combine mayonnaise, sour cream, mustard and salt in a small bowl and add to potatoes.
Gently mix in sliced celery, radishes and olives.
Sprinkle with chives and season to taste with cracked black pepper.
This salad can be made ahead up to just before adding the herbs. Keep chilled until ready to serve, then sprinkle with chives and season with pepper.