The Hidden Science Behind the Perfect Potato Chip: Breeding, Genetics, and Innovation

Behind every crispy bite of a potato chip lies decades of scientific innovation. Researchers have spent years developing potato varieties tailored for chip makers—varieties that can grow in diverse climates, resist diseases and pests, and remain fresh in storage for months while delivering a satisfying crunch.

They also adapt to consumer trends. For example, the shift toward snack-size portions has increased demand for smaller chipping potatoes.

“The potato industry is dynamic,” said David Douches, a professor at Michigan State University and director of the school’s Potato Breeding and Genetics Program. “The needs change, the costs, the pressures, and the markets change. So we have to adapt our varieties accordingly.”

Douches has developed five new potato varieties for chips in the last 15 years. His latest breakthrough is a bioengineered potato designed to maintain a proper sugar balance when stored at colder temperatures, reducing spoilage. He is currently growing seeds for commercial testing, though the potato is not yet available on the market.

Douches’ work extends beyond chips. He has developed disease-resistant potato varieties for farmers in Nigeria, Kenya, Rwanda, and Bangladesh, contributing to global food security. Yet his research also supports the U.S. chip industry and Michigan’s $2.5 billion potato sector—a sector where Michigan leads as the top producer of chipping potatoes, despite Idaho’s dominance in overall potato production.

Currently, around 50 unique potato varieties are grown specifically for chips in the U.S., according to the National Chip Program. This cooperative initiative unites Michigan State University and 11 other university breeding programs with growers, chip manufacturers, and the U.S. Department of Agriculture.

Improving these varieties is an ongoing effort. The National Chip Program evaluates approximately 225 new potato varieties each year, selecting 100 for further trials, said Tim Rendall, director of production research at Potatoes USA, the trade group overseeing the program.

Collaboration Drives Innovation in the Chip Industry

The close partnership between researchers, farmers, and potato chip companies is uncommon in the food industry, said Phil Gusmano, vice president of purchasing at Better Made Snack Foods. The Detroit-based company has produced potato chips since 1930 and collaborated with Douches during the development of two varieties now used by the company.

“We were able to discuss size profile and specific needs that make a really good chip,” Gusmano said. “And the great thing is, they’re willing to listen to what we have to say. If they develop a potato that doesn’t meet the needs of the end processor, it doesn’t help anyone.”

The Complex Science of Potato Breeding

Breeding a new potato variety can take up to 15 years, Douches explained. The potato’s genetic structure is surprisingly complex: each cell contains four chromosomes, compared to two in most species, including humans. This complexity makes it difficult to predict which traits offspring will inherit.

“We’re never able to fix a trait and carry it over to the next generation, so it’s very difficult to find a potato that has all the traits we want,” Douches said.