Peel and halve the potatoes. Place them in a baking dish. Scatter over the celery, leeks and a liberal sprinkling of black pepper. Cover with chicken stock, adding additional stock or water if necessary.
Bake in a preheated 425 degree oven for about 30 minutes or until the potatoes are cooked through., basting occasionally and ading water if needed. Remove the pan from the oven and taste the sauce. Season with salt and pepper. If the sauce is watery, pour it into a suacepan and rapidly boil it down until it has the intensity of flavor you prefer.
Serve with pork cutlet. Nape sauce over pork and vegetables
Puree every 1 1/4 cups of leftover vegetable and stock mixture with 1/4 cup low fat yogurt. If you have less vegetables and stock, adjust the amount of yogurt acordingly. Add a pinch of cayenne pepper and salt to taste. chill before serving with a garnish of chopped chives for scallion greens.