Cooking oil is all-natural fat, plant, or synthetic fat derived from cooking meat, fish, poultry, or nuts and sometimes dairy products. It can also be called vegetable oil and used for flavor and cooking not involving heat. All oils have a purpose, but not all oils are the same. The two most widely used fats in cooking are liquid oil (or monounsaturated fat) and fat solids (or saturated fat).
Saturated fat is harder to digest than other oils, so it should be avoided during the cooking process unless cooking oil is at room temperature. Liquid oils are easily absorbed by the body; however, solids fat does not dissolve readily in the body and tends to form a greasy film that makes foods taste better if they are fried or broiled. This greasy film also attracts moisture, making it necessary to use extra cooking oil to dilute its concentration to make it easier to spread across the surface of the food. Coconut oil, for example, has a low amount of saturated fat and is very easy to use in baking and cooking without making the food taste sour or dirty.
Most people agree that the best type of cooking oil for most cooking methods is virgin oil, because it contains very little smokeable substances that might degrade over time. Coconut oil, palm oil, olive oil, canola oil, walnut oil, sesame oil, safflower oil, sesame seed oil, sunflower oil, and vegetable oil are similar in characteristics, taste, texture, and ability to enhance foods in equal measure. They are also low in calories and have good levels of antioxidants and nutrients. These oils are versatile enough to be used as spreads, used in baking and cooking, and occasionally as an ingredient in recipes.