Place the potatoes in a large saucepan and completely cover them with cold (from the tap) water. Pop the lid on and bring the pot to a boil then cook for 12-15 minutes or until tender.
Drain then and set aside for 15 minutes to cool.
To make the dressing, whisk all the ingredients together and then season with salt and pepper.
Cut the potatoes in half and place them in a bowl then pour over the dressing and add the chopped herbs and lemon zest.
Season with salt and pepper and toss well so all the potatoes are coated.
Serve on a platter and watch it disappear.
