Fez — A team of food scientists at the University of Illinois Urbana-Champaign has reported progress on a healthier way to make French fries, using a combination of conventional frying and microwave heating to reduce oil absorption without sacrificing the texture associated with fried potatoes.
The work appears in recent research tied to the “Journal of Food Science,” with the university also presenting it as a practical step toward lower-fat fried foods.
The idea behind the method is relatively simple. In standard frying, potatoes initially contain water in their pores, which limits oil entry.
That water evaporates as frying continues, leaving empty spaces that allow oil to move in. The Illinois team focused on altering that pressure pattern during cooking.
Adding microwave energy generates more vapor inside the potato, helping maintain internal pressure in ways that reduce the pull drawing oil into the fries.
The researchers did not present microwaving alone as the answer. On its own, microwave cooking can soften the product too much and fail to create the crisp shell consumers expect.
Instead, the studies point toward a combined system in which conventional frying delivers the desired exterior texture while microwave heating shortens frying time and cuts the amount of absorbed oil.
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That balance appears to be the breakthrough. According to University of Illinois research summaries tied to the project, the microwave-frying approach reduced frying times by 33% to 76% and lowered the oil content of French fries by 3% to 33% compared with conventional frying, depending on operating conditions. The findings suggest the method could be useful not only for home experimentation in principle, but more importantly for food manufacturers looking to produce lower-fat fried foods at scale.
The work also builds on earlier research in the field. A 2016 study published in the “Journal of Food Science” had already found that reduced fat uptake during microwave frying did not necessarily compromise desirable quality traits in French fries. The newer Illinois work pushes that line of inquiry further by examining pressure development, moisture movement, and process design in more detail.
The bigger significance may lie less in the fries themselves than in what they represent. Fried foods remain popular worldwide despite well-established concerns around excess fat and calorie intake. Research that preserves familiar taste and crunch while lowering oil content offers the food industry a rare middle ground between consumer preference and health pressure.
For now, the method is still a research-driven processing approach rather than a supermarket standard, but it points to a future in which the indulgence of a French fry may come with slightly less nutritional cost.
