New Method Creates Healthier, Crispy French Fries

Researchers at the University of Illinois Urbana-Champaign have developed a food engineering method to produce French fries with significantly lower fat content without compromising the taste or crispiness of the product. The technique combines traditional frying with microwave heating to limit the amount of oil absorbed by the potato during the cooking process.

The findings, announced on April 2, 2026, suggest that this hybrid approach can create a healthier alternative to conventional fried foods. This development addresses a long-standing challenge in food science: reducing the caloric density of fried items while maintaining the sensory characteristics that consumers prefer.

The Mechanics of Oil Absorption

To understand how the new method works, researchers examined the physical changes that occur within a potato during traditional frying. In the initial stages of the process, the pores of the potato are filled with water, which prevents oil from entering the food.

As the cooking process continues, the water inside the potato evaporates. This evaporation creates empty spaces within the potato’s structure, which then generate negative pressure. This vacuum-like effect draws oil from the frying medium into the potato, increasing the overall fat content of the fry.

The new technique introduces microwave heating to counteract this negative pressure. By utilizing microwaves, the researchers were able to change how pressure builds inside the potato. Instead of allowing oil to be drawn in, the microwave heating helps push oil out of the food, limiting the amount of fat that seeps into the pores.

Health Impacts and Consumer Cravings

The drive for this research stems from the known health risks associated with high-fat fried foods, which are linked to conditions such as hypertension and obesity. However, food scientists note that health-conscious consumers often struggle to avoid these foods due to the flavor and texture provided by oil.

Pawan Singh Takhar, a professor of food engineering in the Department of Food Science and Human Nutrition at the University of Illinois and the principal investigator of the study, noted the psychological aspect of food choice.

Consumers want healthy foods, but at the time of purchase, their cravings often take over. High oil content adds flavor, but it also contains a lot of energy and calories.

Pawan Singh Takhar

The goal of the research team was to assist consumers in making healthier choices by removing the feeling of deprivation. By achieving a lower fat content without significant differences in taste and texture, the microwave-frying method aims to satisfy cravings while reducing caloric intake.

Industrial Application and Verification

Beyond health benefits, the research indicates that combining microwave heating with traditional frying can shorten overall cooking times. This increased efficiency makes the method potentially appealing for large-scale food production, where speed and consistency are critical.

The technical details and results of this method have been documented in two separate studies. These findings were published in The Journal of Food Science and Current Research in Food Science.

The research was conducted through the University of Illinois College of Agricultural, Consumer and Environmental Sciences. The team focused on ensuring that the final product remained crispy, as the loss of texture is typically the primary drawback of lower-fat cooking alternatives.

My research team studies frying with the aim of obtaining lower fat content without significant differences in taste and texture

Pawan Singh Takhar