I never peel potatoes for salads. The skins of the red ones are pretty in a salad and if you throw them away, you waste their fiber. Just scrub the potatoes with one of those plastic scouring pads.

6 red potatoes
1/2 cup chopped celery
1/4 cup chopped onion
1/2 cup plain yoghurt
1/4 cup dijon mustard
2 teaspoons celery seed
1/4 cup snipped fresh dill
Freshly ground pepper to taste
1/2 cup mayonnaise

Boil the potatoes until just tender, about 20 minutes. Cool and dice. Combine with the remaining ingredients except the mayonnaise and chill at least 30 minutes. Mix in mayonnaise just before serving.

4-6 servings