3 potato herb buttermilk dressing Recipes

yukon gold potatoes, cider vinegar, salt, sugar snap peas (1 cup), trimmed, carrot (3 oz), quartered lengthwise (or halved if thin), then cut crosswise into 1/3-inch pieces, radishes (3 oz total), cut into 1/8-inch-thick matchsticks, celery rib, cut crosswise into 1/4-inch-thick slices, low-fat buttermilk dressing, low-fat sour cream, loosely packed fresh cilantro sprigs, chopped fresh chives, black pepper

white potatoes , scrubbed clean and patted dry, olive oil, salt, freshly ground black pepper, fennel bulb, stem removed and fronds reserved, wiped clean, bottom left intact, and cut lengthwise into 1/4-inch slices, sweet onion , such as walla walla, texas sweet, maui or vidalia, peeled, ends trimmed, and cut lengthwise into 1/4-inch slices, herbed buttermilk dressing , recipe follows