Salad:

• 1 Boil the potatoes in lightly salted water. Cut the pepper into thin 2-inch strips. Cut the onion into thin slices. Slice the warm boiled potatoes into a salad bowl, scatter the sliced peppers and onions over them and pour on about 1/2 cup of the vinaigrette. 2 Using your hands, gently mix the salad until each potato slice is coated with vinaigrette and the onions and peppers are well distributed. 3 Taste the salad and season it with salt and freshly ground pepper. 4 Let the salad stand at least an hour. Before serving, taste the salad again and add vinaigrette to taste.
• Mustard Vinaigrette:1 Combine all ingredients in a bowl EXCEPT oil and whisk until frothy.2 Whip mixture continuously as a steady stream of oil is added to the mixture. Whisk until all oil is incorporated.3 Season to taste.
• Source: Idaho Potato Commission