Frying is the

cooking Cooking, also known as cookery or professionally as the culinary arts, is the art, science and craft of using heat to make food more palatable, digestible, nutritious, or Food safety, safe. Cooking techniques and ingredients vary widely, from ...

of food in oil or another

fat In nutrition science, nutrition, biology, and chemistry, fat usually means any ester of fatty acids, or a mixture of such chemical compound, compounds, most commonly those that occur in living beings or in food. The term often refers specif ...

. Similar to sautéing, pan-fried foods are generally turned over once or twice during cooking to make sure that the food is evenly cooked, using

tongs Tongs are a type of tool used to grip and lift objects instead of holding them directly with hands. There are many forms of tongs adapted to their specific use. Design variations include resting points so that the working end of the tongs d ...

or a

spatula A spatula is a broad, flat, flexible blade used to mix, spread and lift material including foods, drugs, plaster and paints. In medical applications, "spatula" may also be used synonymously with tongue depressor. The word ''spatula'' derives ...

, whilst sautéed foods are cooked by "tossing in the pan". A large variety of foods may be fried.

History

Frying is believed to have first appeared in the

Ancient Egypt Ancient Egypt () was a cradle of civilization concentrated along the lower reaches of the Nile River in Northeast Africa. It emerged from prehistoric Egypt around 3150BC (according to conventional Egyptian chronology), when Upper and Lower E ...

ian kitchen, during the

Old Kingdom In ancient Egyptian history, the Old Kingdom is the period spanning –2200 BC. It is also known as the "Age of the Pyramids" or the "Age of the Pyramid Builders", as it encompasses the reigns of the great pyramid-builders of the Fourth Dynast ...

, around 2500 BC.Tannahill, Reay. (1995). ''Food in History''. Three Rivers Press. p. 75 Around the Middle Ages, fried food became a common delicacy for wealthy people, with fried meats and vegetables becoming popular dishes. It is believed that frying was created, and used, as a way to preserve food.

Variations

Unlike water, fats can reach

temperature Temperature is a physical quantity that quantitatively expresses the attribute of hotness or coldness. Temperature is measurement, measured with a thermometer. It reflects the average kinetic energy of the vibrating and colliding atoms making ...

s much higher than 100 °C (212 °F) before boiling. This paired with their heat absorption properties, neutral or desired taste, and non-toxicity, makes them uniquely valuable in cooking, especially frying. As a result, they are used in a wide variety of cuisines. Through frying, one can sear or even carbonize the surface of foods while caramelizing sugars. The food is cooked much more quickly and has a characteristic crispness and texture. Depending on the food, the fat will penetrate it to varying degrees, contributing richness, lubricity, its own flavour, and calories. Frying techniques vary in the amount of fat required, the cooking time, the type of cooking vessel required, and the manipulation of the food. Sautéing, stir-frying, pan frying, shallow frying, and

deep frying 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 Cooking oil, oil, as opposed to the shallow frying used in conventional frying done in a fryi ...

are all standard frying techniques. Pan-frying, sautéing, and stir-frying involve cooking foods in a thin layer of fat on a hot surface, such as a frying pan, griddle, wok, or sautee. Stir frying involves frying quickly at very high temperatures, requiring that the food be stirred continuously to prevent it from adhering to the cooking surface and burning. Shallow frying is a type of pan frying using only enough fat to immerse approximately one-third to one-half of each piece of food; fat used in this technique is typically only used once. Deep-frying, on the other hand, involves totally immersing the food in hot oil, which is normally topped up and used several times before being disposed of. Deep-frying is typically a much more involved process and may require specialized oils for optimal results. Deep frying is now the basis of a very large and expanding worldwide industry. Fried products have consumer appeal in all age groups and in virtually all cultures, and the process is quick, can easily be made continuous for mass production, and the food emerges sterile and dry, with a relatively long shelf life. The end products can then be easily packaged for storage and distribution. Some include

potato chip Potato chips (North American English and Australian English; often just chip) or crisp (British English and Hiberno-English) are thin slices of potato (or a thin deposit of potato paste) that has been deep frying, deep fried, baking, baked, ...

s, French fries, nuts, doughnuts, and instant noodles.

Health

A 2021

meta-analysis Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, th ...

found that the highest category of fried food consumption compared to the lowest is associated with a 3% increase in the risk of all-cause mortality, as well as with a 2% increase in the risk of

cardiovascular In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. It includes the cardiovascular system, or vascular system, that consists of the heart a ...

mortality. Compared to participants with a low intake, those who ate the most fried food had a 37% increased risk of

heart failure Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome caused by an impairment in the heart's ability to Cardiac cycle, fill with and pump blood. Although symptoms vary based on which side of the heart is affected, HF ...

, a 28% increased risk of major cardiovascular events, and a 22% increased risk of coronary heart disease. The risk of

stroke Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...

, heart failure, and

heart attack A myocardial infarction (MI), commonly known as a heart attack, occurs when Ischemia, blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle. The most common symptom ...

modestly increased with the increase of weekly servings of fried food. The study concluded that fried food consumption may increase the risk of cardiovascular disease and presents a linear dose-response relation. The researchers theorized the main reasons behind these associations are the high trans fat and calorie content of fried foods and their pro-inflammatory nature. It was also noted that eating hyperpalatable crisp-fried foods may entice people to engage in routine overeating. A 2023 meta-analysis found that fried food consumption is linked to a 52% increase in the risk of

stomach cancer Stomach cancer, also known as gastric cancer, is a malignant tumor of the stomach. It is a cancer that develops in the Gastric mucosa, lining of the stomach. Most cases of stomach cancers are gastric carcinomas, which can be divided into a numb ...

. Fried food intake is also associated with prehypertension,

hypertension Hypertension, also known as high blood pressure, is a Chronic condition, long-term Disease, medical condition in which the blood pressure in the artery, arteries is persistently elevated. High blood pressure usually does not cause symptoms i ...

and

obesity Obesity is a medical condition, considered by multiple organizations to be a disease, in which excess Adipose tissue, body fat has accumulated to such an extent that it can potentially have negative effects on health. People are classifi ...

. Cooking Tofu (17073564921).jpg, Tofu being fried Gordurema.jpg, Fried

polenta Polenta (, ) is an Italian cuisine, Italian dish of boiled cornmeal that was historically made from other grains. It may be allowed to cool and solidify into a loaf that can be baked, fried or Grilling, grilled. The variety of cereal used is ...

, French fries, and fried chicken at a Brazilian eatery Pakoras in Jaipur.jpg, Pakora is a fried snack, popular throughout the

Indian subcontinent The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divided between Bangladesh, India, and Pakista ...

, served in Jaipur, India. Guasteddra dolce Caltanissetta 01.jpg, Guastedde a fried Sicilian dessert, in a shop window

Notes

References

External links