Shallow frying is a hot oil-based cooking technique. Pieces of food are cooked by partial submersion in hot oil. It is typically used to prepare portion-sized cuts of meat, fish, potatoes and patties such as fritters. Shallow frying can also be used to cook vegetables.
Shallow frying is distinct from deep frying, which uses enough oil to fully submerge the food to be cooked, and pan frying, which only uses a negligible depth of oil.
Pan frying or pan-frying is a form of frying food characterized by the use of minimal cooking oil or fat (compared to shallow frying or deep frying), typically using just enough to lubricate the pan. In the case of a greasy food such as bacon, no oil or fats may need to be added. As a form of frying, the technique relies on oil or fat as the heat transfer medium, and on correct temperature and time to not overcook or burn the food. Pan frying can serve to retain the moisture in foods such as meat and seafood. The food is typically flipped at least once to ensure that both sides are cooked properly.
Deep frying (also referred to as deep fat frying) is a cooking method in which food is submerged in hot fat, traditionally lard but today most commonly oil, as opposed to the shallow frying used in conventional frying done in a frying pan. Normally, a deep fryer or chip pan is used for this; industrially, a pressure fryer or vacuum fryer may be used. Deep frying may also be performed using oil that is heated in a pot. Deep frying is classified as a hot-fat cooking method. Typically, deep frying foods cook quickly since oil has a high rate of heat conduction and all sides of the food are cooked simultaneously.
The term "deep frying" and many modern deep-fried foods were not invented until the 19th century, but the practice has been around for millennia. Early records and cookbooks suggest that the practice began in certain European countries before other countries adopted the practice.
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