Choose a method for your potatoes. If you’ve got starchy potatoes, see the ‘potatoes’ section for a method to oven roast crispy potatoes. If you have all rounder or waxy potatoes, put them into a large pot of well salted water. Place the pot on a medium high heat and boil just until a knife cuts right through a potato. It helps to gently move the potatoes around so that the bottom potatoes don’t cook before the top ones and becomes mushy.
Drain the potatoes and allow to steam dry.
To make the dressing, blend all the remaining ingredients in a high speed processor and process until smooth. Adjust for taste and add optional additions as you wish.
Place the cooked potatoes on a very large serving platter and decant the green dressing onto the platter. Gently mix to cover the potatoes in dressing. Top with any additional extras you’re using and serve.