Deep Frying is a very common method of frying food. This is accomplished by submerging it entirely in hot oil. This method is employed all over the world to cook many foods, including french fries, fish and chips, and chicken. If you have eaten out at a restaurant, then chances are you have eaten deep fried foods.
Deep frying is classified as a dry cooking method because no water is used. Due to the high temperature involved and the high heat conduction of oil, it cooks food extremely quickly.
If performed properly, deep-frying does not make food excessively greasy, because the moisture in the food repels the oil. The hot oil heats the water within the food, steaming it; oil cannot go against the direction of this powerful flow because (due to its high temperature) the water vapor pushes the bubbles toward the surface.