Food Science: Why Frying Makes Food Crispy? 5 Tips for Frying

The practice of frying, in which food is cooked by being submerged in hot oil or fat, is a common method of cooking that produces a wonderfully crunchy texture. Crispy fried meals are cherished in every region of the world, from golden french fries to delectable fried chicken. But what exactly takes on during the frying process that causes food to acquire that lovely crunch? Discovering the science that lies behind frying is the key to unlocking the mysteries of this gastronomic metamorphosis. While the meal is being cooked, the liquid that is contained within it transforms into steam, which creates tiny bubbles that push against the outer crust. This results in the satisfyingly crisp texture that we seek. However, as frying requires the absorption of some oil, moderation is absolutely necessary in order to take full advantage of this decadent cooking method. 

The science 

Due to the extreme heat, the water inside the meal quickly turns into steam, forming a thin layer of vapour between the food and the oil. The steam forms a protective layer that keeps the oil from penetrating the food too deeply. The Maillard reaction begins as the surface temperature of the meal rapidly increases during cooking. Amino acids (from proteins) and reducing sugars (from carbohydrates) in the diet undergo this chemical change. Fried foods get their signature colour and smell due to the production of a complex network of flavour compounds and brown pigments during the frying process. 

Simultaneously, little pockets of steam are created within the food structure as moisture rapidly evaporates. Steam bubbles in the food expand and burst when they come into touch with the hot oil. A crisp and crunchy texture forms because of this procedure. In addition, the boiling water inside the food is pushed outward and to the surface by the high temperature of the oil. The bubbles and cracks on the surface of the meal are caused by the evaporating water and contribute to its crispiness. 

Deep frying can be done in a way that is more health-conscious by following these tips: 

Choose the Right Oil: Canola, sunflower, and peanut oils all have a high smoke point and are good choices. These oils are less likely to oxidise or create other undesirable chemicals when heated. 

Oil Temperature: Make sure the oil temperature is between 175 and 190 degrees Celsius (350- and 375-degrees Fahrenheit) by using a deep-fry thermometer. This speeds up the cooking process and reduces the need for added oil. 

Frying Vessel: Fry in a large, wide saucepan covered with a lid to contain oil splatters and keep the heat in. Don't crowd the pan, as doing so can cause the oil temperature to drop, resulting in oily meals. 

Drain Excess Oil: After frying, transfer the food to a paper towel-lined plate or wire rack to absorb the excess oil. 

Moderation is Key: Treat yourself to deep-fried delicacies every once in a while. Eating a diet rich in fruits, vegetables, and whole grains will benefit your body in the long run.