2 tbsp finely chopped fresh chives
half cucumber (about 150g/5陆oz), deseeded and chopped into 1cm/陆in pieces
2 tbsp finely chopped fresh dill
1 garlic clove, finely chopped
1 lemon, juice only
2 tbsp finely chopped fresh parsley
700g/1lb 9oz Maris Piper or King Edward potatoes, skin on, cut in half or thirds
1 red onion, finely chopped
1 tsp Dijon mustard
120驳/4陆辞锄 mayonnaise
salt and freshly ground black pepper
5 tbsp olive oil
60g/2录oz Greek-style yoghurt