Cooking oils are mainly used for roasting, baking, sauteing vegetables, making salad dressings and for stir-frying one's favorite foods and dishes. The oils or shortenings used for cooking are either classified as monounsaturated, saturated or polyunsaturated fats. Some of the most common cooking oils found in supermarkets and used today are olive oil, peanut oil, canola oil, sesame oil and walnut oil.
Some of the oils that are the most healthy and work best for cooking are canola, extra-virgin olive oil and walnut oil. Walnut oil, which is the most expensive of all three, provides a great nutty flavor that is tasty in salad dressings. Heart-healthy olive oil is high in antioxidants and is great for making salad dressings and sauteing vegetables. And finally, canola oil has a neutral flavor and high smoke point, which make it ideal for roasting, baking, sauteing and creating salad dressings.