The sweet potato is well-loved for its soft, brightly-colored flesh, enjoyed in a variety of dishes, including purée, as fries, in soup, served "au gratin", and even stuffed! The orange flesh of the sweet potato is a nutritional superstar. One serving contains four times the daily recommended intake of beta-carotene. This highly-touted antioxidant contains plenty of vitamin A, and also contributes to healthy skin, eyes, and hair. Sweet potatoes also have a low glycemic index, which makes them great for those with diabetes. When cooked in the oven, sweet potatoes have a naturally sweet flavour and rich texture. Served with a salad, they make for a filling and nutritious meal. This recipe includes crunchy roasted hazelnuts that provide a great contrast with the soft, roasted sweet potato. Za'atar is a spice blend that mixes dried thyme, oregano, savoury, sesame seeds, and sumac. It can easily be found in shops that specialize in spices, or in organic grocery stores.