Ratatouille is a traditional French Provençal stewed vegetable dish, originating in Nice. The word ratatouille comes from Occitan ratatolha and the recipe comes from Occitan cuisine. The French touiller means to toss food. It’s often served as a side dish with lamb or other meats or poultry — even fish. It’s also a hearty meal served over rice or couscous. Easy to make and extremely healthy, watch the video to learn how.