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Froyo bonbons wrapped in edible skins

Stonyfield Frozen Yogurt Pearls developed with WikiFoods.Jeremy Earl Mayhew

CAMBRIDGE — The strawberry- and coconut-covered frozen-yogurt bonbons in David Edwards's new Kendall Square lab, WikiFoods, look familiar and tasty enough. But these bite-size treats, developed in conjunction with New Hampshire-based Stonyfield Farm, are not just another dessert. They are the first of a new wave of sustainable food products made to replace plastic packaging with natural, edible food skins.

In this case, the outer layer is actually fruit. Its design is inspired by cellular structure, and it serves both as a thermal barrier and a protective membrane for what's inside. The size and shape of a donut hole or the Japanese dessert known as mochi, these Stonyfield Frozen Yogurt Pearls have a handmade look and a familiar frozen-yogurt tang. The exterior maintains its strength and holds the contents even as the centers begin to thaw, releasing little more than a bit of moisture. Stonyfield touts the product's ability to be handled without damage.


Edwards and his team at WikiFoods are seeking nothing less than to revolutionize the packaged food industry. "There's a trillion-dollar industry based on certain ways of eating, packaging, and distributing food," says Edwards, a chemical engineer and a professor of the practice of idea translation at the Harvard School of Engineering and Applied Sciences. The "pearls," as Stonyfield chairman Gary Hirshberg calls them, are the first innovation of WikiFoods to hit grocery stores. The product will be test-marketed later this month at various Whole Foods locations in the area. "Here, the notion is edible packaging — making packaging as nature makes fruit," Edwards says.

“Here, the notion is edible packaging — making packaging as nature makes fruit,” says David Edwards of the Stonyfield Frozen Yogurt Pearls.David L. Ryan/Globe Staff/FILE 2013/Globe Staff

The pearls were spurred by a student discussion in a course Edwards teaches called "How to Create Things and Have Them Matter." The professor began collaborating with other scientists and artists to develop the design, which eventually became known as "wikicells."

Edwards says he chose the "wiki" name after giving an early sample to Nicholas Negroponte, cofounder of the MIT Media Laboratory. Negroponte offered his thoughts and invited Edwards to begin sharing the design with others at MIT. Edwards sees an ongoing back and forth with others as essential to the technology's success. "I really believe that this will be co-curated with the public," he says. "You really don't change the way people are eating without them coming and changing it with you."


To engineer a protective, cell-like membrane for food packaging, Edwards had to create a material that would hold the product's moisture in and keep oxygen out. The key turned out to be electrostatically charged food particles. By densely packing wikicells with edible material, such as the strawberries surrounding the frozen yogurt pearls, he is able to create a natural skin that is less permeable to moisture and oxygen. The edible skins can be made of many kinds of materials and become stronger as they are layered. Edwards envisions their use for foods ranging from yogurt to soup to beverages — all of which could be sold, like apples or tomatoes, without any other package. "It's the first organic packaging ever," says the entrepreneur, whose company, Advanced Inhalation Research, was purchased in 1999 by Alkermes Inc.

In his quest to bring edible packaging to the supermarket, Edwards found a kindred spirit in Stonyfield's Hirshberg, who has a long history of introducing organic products and corporate sustainability to the marketplace. "I've probably given 500 lectures where I have always said, 'My dream is that when you finish eating the yogurt, you eat the cup,' " Hirshberg says.


The pair met in Paris, where Edwards runs Le Laboratoire, described on its website as a "contemporary art and design center." There, Edwards teams with scientists, chefs, and artists to create new and experimental food experiences.

Also part of Le Laboratoire is WikiBar, a high-design ice cream parlor where Parisians can buy ice cream bonbons in flavors such as mango with a coconut skin, or chocolate with a hazelnut skin.

Beyond ice cream, visitors have had the opportunity to experience, notebooks in hand, everything from cocktails to gazpacho to Black Forest cake, all reimagined as "wiki" eating experiences. The gazpacho, served frozen over vegetables, comes with a tomato outer layer. As it thaws, diners cut into the skin, releasing the cold soup. "It's beautiful," Edwards says. He has also experimented with herb-coated soft cheese and applesauce with a strawberry coating. Researchers at the Kendall Square lab are examining the physical properties of many potential foods for use as edible food skins.

Local culinary adventurers will have the opportunity to try some of these experiments firsthand when Edwards opens Cafe ArtScience at 650 Kendall Square in July. Details are evolving; Edwards says he is working with a "well-known mixologist" to create a larger companion to the Paris WikiBar, which will include a restaurant, bar, and cafe. In the Cambridge location, people will be able to have lunch, dinner, or drinks and "if you like, have it be a very experimental experience."


Stonyfield Frozen Yogurt Pearls will be sold at Whole Foods, both packaged in cellulose bags in the freezer, and at demonstration stations, where customers can get them in to-go containers if they choose. Hirshberg sees the minimal biodegradable containers as a first step toward eliminating packaging entirely. "All along we've been obsessed with less,"
Hirshberg says, "not just compostability, not just recyclability or reusability, but using less material."

Stonyfield Frozen Yogurt Pearls developed with WikiFoods are wrapped in edible skins made from fruits.Jeremy Earl Mayhew

Getting consumers comfortable purchasing foods in nothing more than edible packaging will take both time and attention to product basics, says Karen Martinsen Fleming, director of the Sustainable MBA program at Green Mountain College in Poultney, Vt., and a former vice president of marketing at Stonyfield. "I could easily imagine this kind of product being served in a yogurt bar or some sort of service-based retail establishment," Fleming says. "But the supermarket format will require more thinking because now you've introduced product integrity and safety issues."

"It's kind of a brilliant idea," says Gus Rancatore, co-owner of Toscanini's Ice Cream in Cambridge. He notes that ice cream has long been sold in a single kind of edible package — cones. Rancatore finds creative possibilities in a technology that could produce hand-held treats in a variety of forms from perfect spheres to geometric shapes.

He agrees that health and hygiene are among the challenges ahead for selling products without packaging on grocery shelves. "Customers are more likely to purchase something not only if it's graphically packaged, but protectively packaged," Rancatore says. "The risk of contamination based on any of the concerns people have is important."


Stonyfield says it will be working with retailers on a variety of package-free formats from bulk sales to vending machines.

Hirshberg admits that there's a big hurdle for the unassuming yogurt snacks. "You've got to really be thinking about this as generation 1.0 and there will be many, many more generations ahead."

Michael Floreak can be reached at michaelfloreak@gmail.com.