Root Vegetable Gratin
16 comments
By
Appears in Cook's Illustrated March/April 2015, America's Test Kitchen TV
Root vegetables add complex flavor to the all-potato classic, but how do you get the different types to cook evenly? A glass of wine helps.
has video
WHY THIS RECIPE WORKS
Our root vegetable gratin pairs the earthy flavor of potatoes with thinly sliced sweet rutabaga and savory celery root. We allow these flavors to come to the fore by adding just a few aromatics: onion, garlic, thyme, and Dijon mustard. We a...