Grilled new potato salad with peppers and onions

Ingredients:

1kg new potatoes, boiled until just tender
Rapeseed oil
Salt and freshly ground black pepper
60ml sherry vinegar
15-30g Dijon mustard
160ml olive oil
2 red peppers, griddled, peeled and seeded
2 cubano peppers, griddled, peeled and seeded
2 red onions, with skin, sliced 0.5cm thick and griddled
Handful roughly chopped flat-leaf parsley


Preheat griddle over high heat. Brush potatoes with oil, season with salt and pepper and grill until slightly charred. Whisk the vinegar and mustard in a bowl, then slowly Whisk in the olive oil. Whisk in salt and pepper, to taste. Add the potatoes to the vinaigrette, then add the peppers, onions and the parsley, and toss to combine.