Appears in Cook's Illustrated November/December 2007, America's Test Kitchen TV
Adding carrots, parsnips, turnips, or celery root to mashed potatoes sounds like a good idea—until the mash turns out too watery, too sweet, or too bitter.
Root vegetables add an earthy, intriguing flavor to our mashed potato recipe. We made certain that the flavors were in balance by using root vegetables and potatoes in a ratio of 1:3 and sautéing the root vegetables in butter before adding ...